B129E
Left Blind Spot Sensor Alignment Or Adjustment Incorrect
B129E is an OBD-II diagnostic trouble code meaning: Left Blind Spot Sensor Alignment Or Adjustment Incorrect. Common causes: mechanical damage to the sensor, sensor displacement after repair or impact. Estimated repair cost: $56–167.
Symptoms
- False blind spot warnings
- No warnings when there are objects in the blind spot
- Blind spot system malfunction indicator on the dashboard
Causes
- Mechanical damage to the sensor
- Sensor displacement after repair or impact
- Problems with the sensor wiring harness
- Software failure in the blind spot system module
How to Fix
- Check the physical condition of the sensor and its fastening
- Inspect the wiring harness for damage
- Calibrate the sensor using diagnostic equipment
- If necessary, replace the sensor or wiring harness
Related codes
FAQ
What does the B129E code mean?
B129E is an OBD-II diagnostic trouble code that indicates: Left Blind Spot Sensor Alignment Or Adjustment Incorrect
What causes a B129E error code?
The most common causes of B129E include: Mechanical damage to the sensor; Sensor displacement after repair or impact; Problems with the sensor wiring harness; Software failure in the blind spot system module.
How do I fix a B129E diagnostic trouble code?
To fix B129E: Check the physical condition of the sensor and its fastening. Inspect the wiring harness for damage. Calibrate the sensor using diagnostic equipment. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B129E?
Limited driving only, diagnose soon
How much does it cost to fix B129E?
The estimated repair cost for B129E is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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