C123A
ESP System Sensor Calibration
C123A is an OBD-II diagnostic trouble code meaning: ESP System Sensor Calibration. Common causes: malfunction of the steering angle sensor, damage to wheel speed sensors. Estimated repair cost: $56–167.
Symptoms
- The ESP/ABS indicator on the dashboard is on
- Disabling the stabilization system
- Incorrect operation of the ESP system
- Reduced braking performance
Causes
- Malfunction of the steering angle sensor
- Damage to wheel speed sensors
- Problems with the lateral acceleration sensor
- Sensor wiring harness fault
- Calibration failed after replacing sensors
- Problems with the ESP control unit
How to Fix
- Diagnose the ESP system using a scanner
- Check the condition of the sensors and their connections
- Perform sensor calibration according to manufacturer's procedure
- Check the integrity of the wiring harness
- If necessary, replace faulty sensors
- Update ESP control unit software
Related codes
FAQ
What does the C123A code mean?
C123A is an OBD-II diagnostic trouble code that indicates: ESP System Sensor Calibration
What causes a C123A error code?
The most common causes of C123A include: Malfunction of the steering angle sensor; Damage to wheel speed sensors; Problems with the lateral acceleration sensor; Sensor wiring harness fault.
How do I fix a C123A diagnostic trouble code?
To fix C123A: Diagnose the ESP system using a scanner. Check the condition of the sensors and their connections. Perform sensor calibration according to manufacturer's procedure. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C123A?
Limited driving only, diagnose soon
How much does it cost to fix C123A?
The estimated repair cost for C123A is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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