C276A
Longitudinal Acceleration Sensor Not Detected
C276A is an OBD-II diagnostic trouble code meaning: Longitudinal Acceleration Sensor Not Detected. Common causes: open circuit in the sensor power supply (12v or ground), broken signal wire to srs ecu. Estimated repair cost: $56–167.
Symptoms
- SRS/airbag malfunction lamp is on
- Disabling the seat belt pretensioner system
- Errors in other systems (ESP, ABS) due to lack of acceleration data
Causes
- Open circuit in the sensor power supply (12V or ground)
- Broken signal wire to SRS ECU
- Corrosion of contacts in connectors
- Mechanical damage to the sensor
- Internal sensor failure (rare)
- Damage to the SRS wiring harness
How to Fix
- Check the sensor power supply circuit (12V and ground) with a multimeter
- Inspect connectors and contacts for corrosion
- Diagnose signal line resistance
- If necessary, replace the sensor or restore the integrity of the harness
- Reset SRS system errors using a service scanner
Related codes
FAQ
What does the C276A code mean?
C276A is an OBD-II diagnostic trouble code that indicates: Longitudinal Acceleration Sensor Not Detected
What causes a C276A error code?
The most common causes of C276A include: Open circuit in the sensor power supply (12V or ground); Broken signal wire to SRS ECU; Corrosion of contacts in connectors; Mechanical damage to the sensor.
How do I fix a C276A diagnostic trouble code?
To fix C276A: Check the sensor power supply circuit (12V and ground) with a multimeter. Inspect connectors and contacts for corrosion. Diagnose signal line resistance. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C276A?
Do not drive — repair immediately
How much does it cost to fix C276A?
The estimated repair cost for C276A is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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