C1AA2 Code - Vehicle Speed Tolerance Malfunction
Quick Answer
For vehicles with Lane Departure Alert System: The Lane Departure Warning Camera receives the vehicle speed tolerance signal from the combination meter assembly via Controller Area Network (CAN) communication to control the lane departure alert system. Common causes include Faulty Lane Departure Warning Camera (For vehicles with Lane Departure Alert System), Faulty Combination Meter Assembly (Lane Departure Alert System [W/ Steering Control]), Faulty Forward Recognition Camera (Lane Departure Alert System [W/ Steering Control]). Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- C1AA2 indicates Vehicle Speed Tolerance Malfunction.
- Common causes
- Common causes include Faulty Lane Departure Warning Camera (For vehicles with Lane Departure Alert System), Faulty Combination Meter Assembly (Lane Departure Alert System [W/ Steering Control]), Faulty Forward Recognition Camera (Lane Departure Alert System [W/ Steering Control]).
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code C1AA2 Description
For vehicles with Lane Departure Alert System (W/ Steering Control): The Forward Recognition Camera receives vehicle speed tolerance signals from the Combination Meter Assembly. If the Combination Meter Assembly detects a vehicle speed tolerance malfunction signal, it informs the Forward Recognition Camera via CAN communication, and DTC C1AA2 is stored.
What are the Possible Causes of the DTC C1AA2?
- Faulty Lane Departure Warning Camera (For vehicles with Lane Departure Alert System)
- Faulty Combination Meter Assembly (Lane Departure Alert System [W/ Steering Control])
- Faulty Forward Recognition Camera (Lane Departure Alert System [W/ Steering Control])
How to Fix the DTC C1AA2?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
When replacing the Driving Support ECU Assembly, always replace it with a new one. If a Driving Support ECU Assembly which was installed in another vehicle is used, the information stored in the Driving Support ECU Assembly will not match the information from the vehicle. As a result, a DTC may be stored.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1AA2 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- C1AA2 Lexus — Vehicle Speed Tolerance Malfunction
- C1AA2 Toyota — Vehicle Speed Tolerance Malfunction
Frequently Asked Questions about C1AA2 Code
1. What are the common symptoms of OBDII code C1AA2 (Vehicle Speed Tolerance Malfunction)?
- Common symptoms include inaccurate speedometer readings, ABS warning light illuminated, and potential issues with cruise control functionality.
2. What are the possible causes of OBDII code C1AA2?
- The code C1AA2 can be triggered by issues such as a faulty wheel speed sensor, damaged wiring harness, or problems with the vehicle's speedometer mechanism.
3. How can I diagnose the Vehicle Speed Tolerance Malfunction associated with code C1AA2?
- Diagnosing this issue typically involves using a diagnostic scanner to retrieve the fault code, testing the wheel speed sensors, and inspecting the wiring for any damage or loose connections.
4. Can driving with OBDII code C1AA2 cause further damage to my vehicle?
- While it may not directly cause immediate damage, driving with this issue can lead to inaccurate speed readings and potential safety concerns, especially if the ABS system is affected.
5. Is it safe to continue driving my vehicle with OBDII code C1AA2?
- It is not recommended to drive with this code present, as it can affect the accuracy of speed-related functions and compromise the overall safety of the vehicle.
6. How can I repair OBDII code C1AA2 on my own?
- DIY repair options include checking and cleaning the wheel speed sensors, inspecting the wiring for damage, and ensuring proper installation of any replaced components.
7. Will resetting the OBDII code C1AA2 clear the issue permanently?
- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the Vehicle Speed Tolerance Malfunction is not addressed, the code is likely to reappear.
8. Can a mechanic help fix OBDII code C1AA2 if I am unable to troubleshoot it myself?
- Yes, a qualified mechanic can diagnose the root cause of the code C1AA2 and perform the necessary repairs to resolve the Vehicle Speed Tolerance Malfunction.
9. Are there any recalls or technical service bulletins related to OBDII code C1AA2?
- It's advisable to check with the vehicle manufacturer or authorized service centers to see if there are any recalls or technical service bulletins related to this specific OBDII code.
10. How much can I expect to pay to repair OBDII code C1AA2 at a professional auto repair shop?
- Repair costs for OBDII code C1AA2 can vary depending on the specific cause of the issue, but it is recommended to budget for diagnostic fees, parts replacement costs, and labor charges.
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