C1949
Accelerometer Sensor Circuit Open
C1949 is an OBD-II diagnostic trouble code meaning: Accelerometer Sensor Circuit Open. Common causes: broken or damaged accelerometer sensor wiring harness, corrosion of sensor contacts or connector. Estimated repair cost: $56–167.
Symptoms
- The passive safety system fault indicator is on
- The passive safety system may not work in an accident.
- Error C1949 is stored in the ECU memory
Causes
- Broken or damaged accelerometer sensor wiring harness
- Corrosion of sensor contacts or connector
- Malfunction of the accelerometer sensor itself
- Problems with the restraint system ECU
How to Fix
- Check the integrity of the accelerometer sensor wiring harness
- Inspect the sensor and connector contacts for corrosion
- Check the resistance of the accelerometer sensor (compare with manufacturer's standards)
- If necessary, replace the sensor or wiring harness
- Clear error memory and check if code C1949 returns
Related codes
FAQ
What does the C1949 code mean?
C1949 is an OBD-II diagnostic trouble code that indicates: Accelerometer Sensor Circuit Open
What causes a C1949 error code?
The most common causes of C1949 include: Broken or damaged accelerometer sensor wiring harness; Corrosion of sensor contacts or connector; Malfunction of the accelerometer sensor itself; Problems with the restraint system ECU.
How do I fix a C1949 diagnostic trouble code?
To fix C1949: Check the integrity of the accelerometer sensor wiring harness. Inspect the sensor and connector contacts for corrosion. Check the resistance of the accelerometer sensor (compare with manufacturer's standards). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C1949?
Do not drive — repair immediately
How much does it cost to fix C1949?
The estimated repair cost for C1949 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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