BMW DTC C1202 – Wheel Speed Sensor Front/Left Circuit High
DTC C1202 meaning on BMW
The DTC C1202 for BMW indicates an issue with the Wheel Speed Sensor Front/Left Circuit registering a high voltage. This fault code is specifically related to the front left wheel speed sensor circuit.
BMW DTC C1202 symptoms
Symptoms of the DTC C1202 on a BMW may include:
- ABS warning light illuminated on the dashboard
- Traction control system may be disabled
- Increased stopping distance during braking
- Unusual noises coming from the wheel area
BMW DTC C1202 causes
Common causes of the DTC C1202 on a BMW include:
- Faulty wheel speed sensor
- Corroded or damaged wiring in the sensor circuit
- Poor electrical connection at the sensor or control module
- Defective ABS control module
BMW DTC C1202 seriousness
The DTC C1202 should be addressed promptly as it can affect the proper functioning of the ABS and traction control systems. Driving with this fault unresolved may compromise the vehicle’s safety and stability during braking and cornering.
How to diagnose DTC C1202 on BMW
To diagnose the DTC C1202 on a BMW, you can perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes and identify the specific wheel speed sensor affected.
- Inspect the wiring and connectors associated with the front left wheel speed sensor for any visible damage or corrosion.
- Test the wheel speed sensor using a multimeter to check for proper resistance and voltage readings.
- If necessary, perform a visual inspection of the ABS control module and related components for any signs of damage or malfunction.
How to fix DTC C1202 on BMW
To fix the DTC C1202 on a BMW, you can try the following solutions:
- Replace the front left wheel speed sensor if it is found to be faulty.
- Repair or replace any damaged wiring or connectors in the sensor circuit.
- Clean and secure the electrical connections at the sensor and control module.
- If needed, replace the ABS control module with a new or refurbished unit.
How to erase DTC C1202 on BMW
To erase the DTC C1202 on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the vehicle’s system memory. After addressing the underlying issue causing the fault code, you can reset the codes to see if the problem has been resolved.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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