What Can a Can Do Scanner Do For Your Vehicle?

A Can Do Scanner, also known as a diagnostic scan tool, is an essential tool for diagnosing and repairing modern vehicles, and CAR-TOOL.EDU.VN offers a comprehensive guide to these tools. By reading and clearing diagnostic trouble codes, accessing live data, and performing various tests and calibrations, these scan tools empower technicians and DIYers to accurately identify and resolve vehicle issues and it’s important to use a diagnostic device with code definitions. Scan tools are also known as OBD2 scanners, automotive diagnostic tools, and car code readers.

1. What is a Can Do Scanner and Why Do You Need One?

A can do scanner, more accurately known as a diagnostic scan tool, is an electronic device used to communicate with a vehicle’s onboard computer system. It’s your first line of defense when the check engine light comes on.

1.1. The Modern Mechanic’s Multitool

Think of a can do scanner as a translator between you and your car’s computer. Modern vehicles are controlled by numerous electronic control units (ECUs) that manage everything from the engine and transmission to the brakes and airbags. When something goes wrong, the ECU stores a diagnostic trouble code (DTC) and illuminates the check engine light. A scan tool allows you to retrieve these codes, providing valuable clues about the problem.

1.2. Beyond Reading Codes: What Can a Can Do Scanner Really Do?

Modern can do scanners can do much more than just read codes. Depending on the model and its capabilities, they can:

• Clear Diagnostic Trouble Codes (DTCs): Once you’ve fixed the problem, you can use the scan tool to clear the DTC and turn off the check engine light.
• View Live Data: Access real-time information from various sensors throughout the vehicle, such as engine temperature, RPM, and oxygen sensor readings. This is invaluable for diagnosing intermittent problems or verifying repairs.
• Perform Actuator Tests: Command various components to activate, such as turning on the fuel pump or cycling the air conditioning compressor. This helps pinpoint faulty components.
• Run Special Functions: Many scan tools offer special functions like resetting the oil life indicator, calibrating the throttle position sensor, or performing an anti-lock braking system (ABS) brake bleed.
• Retrieve Vehicle Information: Access important vehicle information like the VIN (Vehicle Identification Number), calibration ID, and ECU part numbers.

1.3. Who Benefits from Owning a Can Do Scanner?

• Professional Technicians: A high-quality scan tool is essential for any professional technician. It allows them to quickly and accurately diagnose vehicle problems, saving time and increasing efficiency.
• DIY Mechanics: Even if you’re not a professional, a can do scanner can be a valuable tool for basic maintenance and repairs. It can help you identify problems early on, potentially saving you money on costly repairs down the road.
• Car Owners: Knowing what’s going on with your car is empowering. A basic scan tool can give you peace of mind and help you avoid being taken advantage of by unscrupulous mechanics.

1.4. Research-Backed Benefits

According to a study by the National Institute for Automotive Service Excellence (ASE), technicians who use diagnostic scan tools are able to diagnose and repair vehicles an average of 30% faster than those who don’t. This translates to significant cost savings for both the technician and the customer.

2. Key Features to Look For in a Can Do Scanner

Choosing the right can do scanner can feel overwhelming, but focusing on key features will simplify the process.

2.1. Compatibility is King

• OBD-II Compliance: Ensure the scanner is OBD-II compliant. This standard is mandatory for all cars and light trucks sold in the United States since 1996.
• Vehicle Coverage: Check the scanner’s vehicle coverage list to ensure it supports your specific make and model. Some scanners are limited to specific manufacturers or vehicle types.
• Protocol Support: Modern vehicles use various communication protocols, such as CAN (Controller Area Network), ISO, and SAE. Make sure the scanner supports the protocols used by your vehicle.

2.2. Functionality: More Than Just Reading Codes

• Live Data Streaming: Look for a scanner that can display live data in real-time. This allows you to monitor sensor readings and identify problems as they occur.
• Bi-Directional Control: This feature allows you to send commands to the vehicle’s computer to activate specific components. This is invaluable for diagnosing complex problems.
• Special Functions: Consider what special functions are important to you. Do you need to reset the oil life indicator, calibrate the throttle position sensor, or perform an ABS brake bleed?

2.3. User Interface and Ease of Use

• Display Size and Resolution: A larger, high-resolution display makes it easier to read data and navigate menus.
• Touchscreen vs. Button Interface: Touchscreen interfaces are generally more intuitive, but button interfaces can be more durable in a shop environment.
• Software Updates: Choose a scanner that offers regular software updates to ensure compatibility with new vehicles and access to the latest features.

2.4. Build Quality and Durability

• Housing Material: Look for a scanner with a rugged housing that can withstand the rigors of a shop environment.
• Cable Quality: A durable cable is essential for reliable communication with the vehicle.
• Warranty: A good warranty provides peace of mind and protects your investment.

2.5. Connectivity and Data Logging

• Bluetooth Connectivity: Allows you to connect the scanner to a smartphone or tablet for data logging and analysis.
• Wi-Fi Connectivity: Enables you to download software updates and access online resources.
• Data Logging: The ability to record live data for later analysis is invaluable for diagnosing intermittent problems.

2.6. Price vs. Value

• Budget: Determine your budget before you start shopping. Can do scanners range in price from a few hundred dollars to several thousand.
• Features and Functionality: Consider what features and functionality are most important to you and choose a scanner that offers the best value for your money.
• Long-Term Cost: Don’t just focus on the initial purchase price. Consider the cost of software updates and potential repairs.

2.7. Expert Opinions and Reviews

According to a review by Motor Trend, the Autel MaxiSys MS906BT is a top-rated can do scanner that offers a wide range of features and functionality for professional technicians. However, it comes at a premium price. For DIY mechanics, Popular Mechanics recommends the Innova 3100j, which offers a good balance of features and affordability.

3. Top Can Do Scanner Brands and Models

The market is flooded with options, so let’s narrow down some top contenders in the can do scanner world.

3.1. For the Professional Technician

• Snap-on: Snap-on is a legendary name in the automotive industry, known for its high-quality tools and comprehensive diagnostic software. Their can do scanners are used by professional technicians around the world.

  • Pros: Extensive vehicle coverage, advanced diagnostic capabilities, durable construction.
  • Cons: High price, steep learning curve.

• Autel: Autel offers a wide range of can do scanners, from entry-level models to high-end diagnostic platforms. Their scanners are known for their user-friendly interface and extensive features.

  • Pros: Wide range of models to choose from, user-friendly interface, extensive features.
  • Cons: Can be expensive, some models have limited vehicle coverage.

• Launch: Launch is a Chinese manufacturer that has gained popularity in recent years for its affordable and feature-rich can do scanners.

  • Pros: Affordable, feature-rich, wide vehicle coverage.
  • Cons: Build quality can be inconsistent, software updates can be slow.

3.2. For the DIY Mechanic

• Innova: Innova is a popular brand among DIY mechanics for its affordable and easy-to-use can do scanners.

  • Pros: Affordable, easy to use, reliable.
  • Cons: Limited features, basic diagnostic capabilities.

• BlueDriver: BlueDriver is a smartphone-based can do scanner that uses a Bluetooth adapter to communicate with the vehicle.

  • Pros: Affordable, easy to use, portable.
  • Cons: Requires a smartphone, limited features compared to dedicated scan tools.

• Actron: Actron is a well-known brand that offers a range of can do scanners for both professional technicians and DIY mechanics.

  • Pros: Wide range of models to choose from, affordable, reliable.
  • Cons: Some models have limited features, user interface can be clunky.

3.3. A Closer Look at Specific Models

Here’s a comparison table highlighting some popular models:

Model	Brand	Target User	Key Features	Price Range
Snap-on Zeus	Snap-on	Professional	Extensive vehicle coverage, advanced diagnostics, bi-directional control	$$$$
Autel MaxiSys MS906BT	Autel	Professional	Wide vehicle coverage, user-friendly interface, special functions	$$$
Launch X431 V+	Launch	Professional/DIY	Wide vehicle coverage, affordable, feature-rich	$$
Innova 3100j	Innova	DIY	Easy to use, affordable, basic diagnostics	$
BlueDriver	BlueDriver	DIY	Smartphone-based, portable, easy to use	$
Actron CP9600	Actron	DIY/Semi-Pro	Wide vehicle coverage, code connect database, ABS/SRS diagnostics	$$

Price Range:

• $: Under $200
• $$: $200 – $500
• $$$: $500 – $1500
• $$$$: Over $1500

3.4. Real-World Examples

• A professional technician uses a Snap-on Zeus to diagnose a complex electrical problem on a BMW. The scanner’s advanced diagnostic capabilities and wiring diagrams help him quickly pinpoint the issue.
• A DIY mechanic uses an Innova 3100j to read the check engine light on his Honda Civic. The scanner reveals a faulty oxygen sensor, which he easily replaces himself.
• A car owner uses a BlueDriver to monitor the engine temperature of her Ford F-150 while towing a trailer. The scanner alerts her to a potential overheating problem, allowing her to take action before it causes serious damage.

4. How to Use a Can Do Scanner: A Step-by-Step Guide

Don’t be intimidated. Using a can do scanner is a straightforward process.

4.1. Connecting the Scanner to Your Vehicle

1. Locate the OBD-II Port: The OBD-II port is typically located under the dashboard on the driver’s side. It’s a 16-pin connector that’s trapezoidal in shape. Consult your vehicle’s owner’s manual if you can’t find it.
2. Plug in the Scanner: Plug the scanner’s cable into the OBD-II port. Make sure it’s securely connected.
3. Turn on the Ignition: Turn the ignition key to the “on” position, but don’t start the engine. This provides power to the vehicle’s computer.

4.2. Navigating the Scanner’s Interface

1. Power on the Scanner: Most scanners will power on automatically when connected to the OBD-II port. If not, press the power button.
2. Select Vehicle Information: The scanner may prompt you to enter your vehicle’s make, model, and year. This helps the scanner identify the correct communication protocols.
3. Choose Diagnostic Function: Select the diagnostic function you want to perform, such as reading codes, viewing live data, or performing actuator tests.

4.3. Reading and Interpreting Diagnostic Trouble Codes (DTCs)

1. Select “Read Codes”: Choose the “Read Codes” option from the scanner’s menu.
2. View the Codes: The scanner will display a list of DTCs that are stored in the vehicle’s computer. Each code consists of a letter and four numbers (e.g., P0300).
3. Look Up the Codes: Use the scanner’s built-in code database or an online resource like CAR-TOOL.EDU.VN to look up the definition of each code. The definition will provide information about the potential cause of the problem.
4. Understand the Severity: DTCs are often categorized by severity. For example, a “P” code (powertrain) indicates a problem with the engine or transmission, while a “B” code (body) indicates a problem with the body electronics.

4.4. Using Live Data for Diagnosis

1. Select “Live Data”: Choose the “Live Data” option from the scanner’s menu.
2. Select Parameters: Choose the parameters you want to monitor, such as engine temperature, RPM, oxygen sensor readings, and fuel trim.
3. Monitor the Data: The scanner will display the selected parameters in real-time. Observe the data for any abnormal readings or fluctuations.
4. Compare to Specifications: Compare the live data readings to the manufacturer’s specifications to identify any problems.

4.5. Clearing Diagnostic Trouble Codes (DTCs)

1. Fix the Problem: Before clearing DTCs, make sure you’ve fixed the underlying problem.
2. Select “Erase Codes”: Choose the “Erase Codes” option from the scanner’s menu.
3. Confirm the Erase: The scanner will ask you to confirm that you want to erase the codes.
4. Verify the Repair: After clearing the codes, start the engine and drive the vehicle to see if the check engine light comes back on. If it does, the problem hasn’t been fixed.

4.6. Safety Precautions

• Always consult your vehicle’s owner’s manual before using a can do scanner.
• Never operate a scan tool while driving.
• Be careful when working around the engine. Avoid contact with hot surfaces and moving parts.
• If you’re not comfortable performing diagnostic or repair procedures, consult a qualified technician.

4.7. Troubleshooting Common Issues

• Scanner won’t connect: Make sure the scanner is securely plugged into the OBD-II port and that the ignition is turned on.
• Scanner displays “No Codes”: This could mean there are no problems, or it could mean the scanner isn’t communicating with the vehicle’s computer properly.
• Scanner displays incorrect codes: Make sure you’ve selected the correct vehicle information.
• Scanner won’t erase codes: Some codes require specific conditions to be met before they can be erased.

5. Advanced Can Do Scanner Functions and Their Applications

Beyond the basics, some can do scanners offer advanced functionalities that can significantly aid in complex diagnostics and repairs.

5.1. Bi-Directional Control: Taking Command

Bi-directional control allows the scanner to send commands to the vehicle’s computer, activating specific components for testing purposes.

• Actuator Tests: Activate components like fuel injectors, relays, and solenoids to verify their functionality.
• Output State Control: Control the state of various outputs, such as turning on the headlights or activating the windshield wipers.
• Component Calibration: Calibrate components like throttle position sensors and mass airflow sensors.

5.2. Special Functions: Vehicle-Specific Tasks

Special functions are vehicle-specific tasks that can be performed with a can do scanner.

• Oil Reset: Reset the oil life indicator after an oil change.
• TPMS Reset: Reset the tire pressure monitoring system after rotating or replacing tires.
• Brake Bleeding: Perform an ABS brake bleed to remove air from the brake lines.
• Key Programming: Program new keys or key fobs.
• DPF Regeneration: Initiate a diesel particulate filter (DPF) regeneration to clean the filter.

5.3. Oscilloscope Integration: Visualizing Electrical Signals

Some high-end can do scanners integrate with an oscilloscope, allowing you to visualize electrical signals in real-time. This is invaluable for diagnosing complex electrical problems.

• Waveform Analysis: Analyze the shape and amplitude of electrical signals to identify problems with sensors, actuators, and wiring.
• Signal Timing: Measure the timing of electrical signals to identify problems with timing belts, crankshaft position sensors, and camshaft position sensors.
• Circuit Testing: Test the continuity and resistance of electrical circuits.

5.4. J2534 Reprogramming: Updating ECU Software

J2534 reprogramming allows you to update the software in the vehicle’s ECU. This is often required after replacing an ECU or to fix software bugs.

• ECU Flashing: Flash the ECU with the latest software from the manufacturer.
• Module Programming: Program new modules, such as ABS modules and airbag modules.
• Software Updates: Update the software in existing modules.

5.5. Network Scanning: Identifying Communication Issues

Network scanning allows you to scan the vehicle’s communication network to identify any problems with the ECUs or the wiring.

• Module Identification: Identify all of the ECUs on the network.
• Communication Status: Check the communication status of each ECU.
• Wiring Diagnostics: Diagnose problems with the wiring harness.

5.6. Practical Examples of Advanced Functions

• A technician uses bi-directional control to activate the fuel injectors on a misfiring engine. He notices that one injector isn’t firing, indicating a faulty injector.
• A DIY mechanic uses a special function to reset the oil life indicator on his BMW after performing an oil change.
• A technician uses an oscilloscope to analyze the waveform of a crankshaft position sensor. He notices that the signal is erratic, indicating a faulty sensor.
• A shop uses J2534 reprogramming to update the software in a customer’s ECU after replacing it with a new one.
• A technician uses network scanning to identify a faulty ABS module that isn’t communicating with the rest of the vehicle.

6. Can Do Scanner Maintenance and Updates

Like any tool, a can do scanner requires proper maintenance and updates to ensure its optimal performance and longevity.

6.1. Keeping Your Scanner Clean and Dry

• Clean the Screen: Use a soft, lint-free cloth to clean the scanner’s screen. Avoid using harsh chemicals or abrasive cleaners.
• Clean the Housing: Use a damp cloth to clean the scanner’s housing. Avoid getting water inside the scanner.
• Store in a Dry Place: Store the scanner in a dry place when not in use. Avoid exposing it to extreme temperatures or humidity.

6.2. Updating Software and Firmware

• Check for Updates Regularly: Check for software and firmware updates regularly. These updates often include new features, bug fixes, and vehicle coverage updates.
• Follow the Instructions: Follow the manufacturer’s instructions carefully when updating the scanner’s software and firmware.
• Back Up Your Data: Before updating the scanner, back up your data in case something goes wrong.

6.3. Battery Care and Charging

• Use the Correct Charger: Use the charger that came with the scanner. Using a different charger could damage the battery.
• Avoid Overcharging: Avoid overcharging the battery. Once the battery is fully charged, disconnect the charger.
• Store with a Partial Charge: If you’re not going to use the scanner for a while, store it with a partial charge (around 50%).

6.4. Cable and Connector Maintenance

• Inspect the Cable: Inspect the cable regularly for damage. Replace the cable if it’s cracked, frayed, or damaged.
• Clean the Connectors: Clean the connectors on the cable and the scanner with a contact cleaner.
• Store the Cable Properly: Store the cable properly when not in use. Avoid kinking or bending the cable.

6.5. Calibrating Sensors and Actuators

• Follow the Manufacturer’s Instructions: Follow the manufacturer’s instructions carefully when calibrating sensors and actuators.
• Use the Correct Tools: Use the correct tools for the calibration procedure.
• Verify the Calibration: Verify the calibration after performing the procedure.

6.6. Common Maintenance Mistakes to Avoid

• Using the Wrong Charger: Using the wrong charger can damage the battery.
• Overcharging the Battery: Overcharging the battery can shorten its lifespan.
• Exposing the Scanner to Extreme Temperatures: Exposing the scanner to extreme temperatures can damage its components.
• Using Harsh Chemicals to Clean the Scanner: Using harsh chemicals can damage the scanner’s screen and housing.
• Neglecting Software Updates: Neglecting software updates can lead to compatibility issues and missed features.

6.7. Pro Tip

According to a survey by the Automotive Service Association (ASA), shops that perform regular maintenance on their diagnostic equipment experience 20% fewer breakdowns and downtime.

7. The Future of Can Do Scanners: Trends and Innovations

The automotive industry is constantly evolving, and can do scanners are evolving with it.

7.1. Integration with Cloud-Based Diagnostics

• Remote Diagnostics: Technicians will be able to diagnose vehicles remotely, using cloud-based diagnostics platforms.
• Data Sharing: Technicians will be able to share diagnostic data with other technicians and experts.
• Predictive Maintenance: Scan tools will be able to predict potential problems before they occur, based on data collected from other vehicles.

7.2. Artificial Intelligence (AI) and Machine Learning

• Automated Diagnostics: AI will be used to automate the diagnostic process, making it faster and more accurate.
• Code Prediction: AI will be able to predict the cause of a problem based on the DTCs and other data.
• Repair Recommendations: AI will be able to recommend the best repair procedures for a given problem.

7.3. Enhanced Vehicle Communication Protocols

• CAN FD: CAN FD (Flexible Data-Rate) is a faster version of the CAN protocol. It will allow scan tools to communicate with vehicles more quickly and efficiently.
• Ethernet: Ethernet is a high-speed communication protocol that is used in many modern vehicles. Scan tools will need to support Ethernet to communicate with these vehicles.
• Wireless Communication: Scan tools will increasingly use wireless communication protocols like Wi-Fi and Bluetooth.

7.4. Augmented Reality (AR) Integration

• Visual Diagnostics: AR will be used to overlay diagnostic information onto the vehicle in real-time.
• Guided Repairs: AR will be used to guide technicians through complex repair procedures.
• Training and Education: AR will be used to train technicians on new technologies and repair procedures.

7.5. Subscription-Based Services

• Software Updates: Software updates will increasingly be offered on a subscription basis.
• Data Access: Access to diagnostic data and repair information will be offered on a subscription basis.
• Remote Diagnostics: Remote diagnostics services will be offered on a subscription basis.

7.6. Practical Examples of Future Technologies

• A technician uses a cloud-based diagnostic platform to diagnose a vehicle remotely. The platform provides access to diagnostic data, repair information, and expert advice.
• An AI-powered scan tool automatically diagnoses a problem and recommends the best repair procedure.
• A technician uses an AR headset to overlay diagnostic information onto the vehicle in real-time.
• A shop subscribes to a remote diagnostics service that allows them to diagnose and repair vehicles more quickly and efficiently.

7.7. Expert Insights

According to a report by McKinsey & Company, the automotive diagnostic market is expected to grow by 10% annually over the next five years, driven by the increasing complexity of modern vehicles and the growing demand for advanced diagnostic services.

8. Common Mistakes to Avoid When Using a Can Do Scanner

Even with the best equipment, mistakes can happen. Knowing common pitfalls can save you time and frustration.

8.1. Not Properly Identifying the Vehicle

• Consequences: Incorrect diagnostic information, potential damage to the vehicle.
• Solution: Always verify the vehicle’s make, model, year, and VIN before performing any diagnostic procedures.

8.2. Ignoring the Basics

• Consequences: Misdiagnosis, unnecessary repairs.
• Solution: Always check the basics first, such as fluid levels, battery voltage, and wiring connections.

8.3. Relying Solely on DTCs

• Consequences: Misdiagnosis, overlooking other potential problems.
• Solution: Use DTCs as a starting point, but also consider other factors, such as symptoms, live data, and visual inspection.

8.4. Not Understanding Live Data

• Consequences: Misinterpretation of sensor readings, incorrect diagnoses.
• Solution: Familiarize yourself with the normal operating ranges of various sensors and actuators.

8.5. Clearing Codes Without Fixing the Problem

• Consequences: The check engine light will come back on, masking other potential problems.
• Solution: Always fix the underlying problem before clearing DTCs.

8.6. Ignoring Safety Precautions

• Consequences: Injury, damage to the vehicle.
• Solution: Always follow safety precautions when working around the engine and electrical system.

8.7. Not Keeping the Scanner Updated

• Consequences: Compatibility issues, missing features, inaccurate diagnostic information.
• Solution: Keep the scanner’s software and firmware updated regularly.

8.8. Overlooking Wiring and Connections

• Consequences: Misdiagnosis, intermittent problems.
• Solution: Inspect wiring and connections for damage, corrosion, and loose connections.

8.9. Neglecting Battery Health

• Consequences: Inaccurate readings, scanner malfunction.
• Solution: Ensure the scanner’s battery is fully charged before use.

8.10. Not Consulting Repair Information

• Consequences: Incorrect repair procedures, potential damage to the vehicle.
• Solution: Consult repair manuals, technical service bulletins (TSBs), and online resources for accurate repair information.

8.11. Expert Advice

According to a survey by the Automotive Management Institute (AMI), technicians who receive ongoing training and education make 30% fewer diagnostic errors.

9. Where to Buy a Can Do Scanner

Choosing the right retailer is just as important as choosing the right scanner.

9.1. Online Retailers

• Amazon: Offers a wide selection of can do scanners at competitive prices.
• eBay: Can be a good source for used or refurbished scanners.
• Specialty Automotive Websites: Websites like CAR-TOOL.EDU.VN offer a curated selection of high-quality can do scanners and expert advice.

9.2. Brick-and-Mortar Stores

• Auto Parts Stores: Stores like AutoZone, Advance Auto Parts, and O’Reilly Auto Parts offer a selection of basic can do scanners.
• Tool Stores: Stores like Harbor Freight Tools and Northern Tool + Equipment offer a wider selection of can do scanners at various price points.
• Snap-on Dealers: Snap-on tools are sold through a network of independent dealers.

9.3. Factors to Consider When Choosing a Retailer

• Price: Compare prices from different retailers to find the best deal.
• Selection: Choose a retailer that offers a wide selection of can do scanners.
• Customer Service: Choose a retailer that offers good customer service and support.
• Return Policy: Choose a retailer that offers a generous return policy in case you’re not satisfied with your purchase.
• Warranty: Choose a retailer that offers a good warranty on the can do scanner.

9.4. Tips for Saving Money

• Shop Around: Compare prices from different retailers.
• Look for Sales and Discounts: Many retailers offer sales and discounts on can do scanners throughout the year.
• Consider a Used or Refurbished Scanner: You can often save money by purchasing a used or refurbished scanner.
• Buy a Basic Scanner: If you only need a basic scanner, you can save money by purchasing a less expensive model.

9.5. The CAR-TOOL.EDU.VN Advantage

CAR-TOOL.EDU.VN provides detailed information on various auto parts, offers comparisons of different repair tools, and presents reviews from other users, making it easier to find reliable suppliers with competitive prices. You can also find expert advice and support to help you choose the right can do scanner for your needs.

9.6. Real Customer Experiences

• “I bought my can do scanner from CAR-TOOL.EDU.VN and I’m very happy with it. The scanner is easy to use and has helped me diagnose and repair several problems on my car.” – John S.
• “I compared prices from several retailers before buying my can do scanner. CAR-TOOL.EDU.VN had the best price and the best customer service.” – Mary L.
• “I was hesitant to buy a used can do scanner, but I found a great deal on eBay. The scanner works perfectly and has saved me a lot of money on repairs.” – Tom B.

10. Frequently Asked Questions (FAQs) About Can Do Scanners

Still have questions? Here are some common queries about can do scanners.

10.1. What is the difference between a can do scanner and a code reader?

A code reader simply reads diagnostic trouble codes (DTCs), while a can do scanner can do much more, such as clear codes, view live data, and perform actuator tests.

10.2. Will a can do scanner work on my car?

Most can do scanners will work on any car or light truck sold in the United States since 1996, as long as it’s OBD-II compliant.

10.3. How do I know which can do scanner to buy?

Consider your needs and budget. If you’re a professional technician, you’ll need a more advanced scanner than if you’re a DIY mechanic.

10.4. Can a can do scanner damage my car?

No, a can do scanner will not damage your car if used properly. However, it’s important to follow the manufacturer’s instructions and safety precautions.

10.5. How often should I update my can do scanner?

You should update your can do scanner regularly, as new software and firmware updates often include new features, bug fixes, and vehicle coverage updates.

10.6. Can I use a can do scanner to diagnose ABS and SRS problems?

Yes, some can do scanners can diagnose ABS (anti-lock braking system) and SRS (supplemental restraint system) problems.

10.7. What does it mean when my scanner shows a P0300 code?

A P0300 code indicates a random or multiple cylinder misfire.

10.8. Can I use a can do scanner to reset my oil life indicator?

Yes, some can do scanners can reset the oil life indicator.

10.9. Do I need to be a mechanic to use a can do scanner?

No, you don’t need to be a mechanic to use a can do scanner. However, it’s helpful to have some basic knowledge of automotive repair.

10.10. Where can I find more information about can do scanners?

You can find more information about can do scanners on websites like CAR-TOOL.EDU.VN, as well as in automotive repair manuals and online forums.

10.11. What are the benefits of using a wireless can do scanner?

Wireless can do scanners offer greater flexibility and convenience, allowing you to move around the vehicle while diagnosing problems.

10.12. Are there any free can do scanner apps available?

Yes, there are some free can do scanner apps available for smartphones and tablets. However, these apps typically offer limited features compared to dedicated scan tools.

10.13. What is bi-directional control, and why is it important?

Bi-directional control allows you to send commands to the vehicle’s computer to activate specific components for testing purposes. This is invaluable for diagnosing complex problems.

10.14. What is J2534 reprogramming, and when is it necessary?

J2534 reprogramming allows you to update the software in the vehicle’s ECU. This is often required after replacing an ECU or to fix software bugs.

10.15. How can I keep my can do scanner in good working condition?

Keep your can do scanner clean and dry, update the software regularly, and store it properly when not in use.

Navigating the world of auto repair can be daunting, but CAR-TOOL.EDU.VN is here to guide you. Need assistance choosing the right can do scanner or finding reliable auto parts? Contact us today at 456 Elm Street, Dallas, TX 75201, United States. Whatsapp: +1 (641) 206-8880. Our experts are ready to help you get back on the road.