C1274
Low Output Signal of Rear Speed Sensor Left
C1274 is an OBD-II diagnostic trouble code meaning: Low Output Signal of Rear Speed Sensor Left. Common causes: malfunction of the rear left wheel speed sensor, broken or damaged sensor wiring. Estimated repair cost: $33–111.
Symptoms
- ABS/ESP indicator is on
- Unstable ABS operation
- Disabling the ESP system
- Errors in the stabilization system
Causes
- Malfunction of the rear left wheel speed sensor
- Broken or damaged sensor wiring
- The magnetic ring on the hub is dirty or damaged
- Problems with the sensor connector
- Malfunction of the ABS/ESP control unit
How to Fix
- Check the integrity of the sensor wiring
- Clean or replace the magnetic ring on the hub
- Check sensor resistance (must meet specification)
- Replace the wheel speed sensor if necessary
- Check connectors and contacts for oxidation
- Scan the ABS/ESP system for other errors
Related codes
FAQ
What does the C1274 code mean?
C1274 is an OBD-II diagnostic trouble code that indicates: Low Output Signal of Rear Speed Sensor Left
What causes a C1274 error code?
The most common causes of C1274 include: Malfunction of the rear left wheel speed sensor; Broken or damaged sensor wiring; The magnetic ring on the hub is dirty or damaged; Problems with the sensor connector.
How do I fix a C1274 diagnostic trouble code?
To fix C1274: Check the integrity of the sensor wiring. Clean or replace the magnetic ring on the hub. Check sensor resistance (must meet specification). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C1274?
Limited driving only, diagnose soon
How much does it cost to fix C1274?
The estimated repair cost for C1274 is $33–111. Actual cost depends on your vehicle, location, and labor rates.
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