C212B
Sensor Supply 3 Voltage
C212B is an OBD-II diagnostic trouble code meaning: Sensor Supply 3 Voltage. Common causes: open or short circuit in wiring harness, oxidation of sensor contacts. Estimated repair cost: $56–167.
Symptoms
- Airbag light is on
- Disabling the restraint system
- Scanner errors when diagnosing other system sensors
Causes
- Open or short circuit in wiring harness
- Oxidation of sensor contacts
- SRS control unit malfunction
- Body weight problems
- Mechanical damage to wiring
How to Fix
- Visual inspection of the SRS wiring harness
- Checking contacts and voltage on sensor No. 3
- Diagnostics of circuit resistance
- Checking body weight in the sensor area
- Replacing the sensor or repairing the wiring if necessary
- Resetting the error and testing the system
Related codes
FAQ
What does the C212B code mean?
C212B is an OBD-II diagnostic trouble code that indicates: Sensor Supply 3 Voltage
What causes a C212B error code?
The most common causes of C212B include: Open or short circuit in wiring harness; Oxidation of sensor contacts; SRS control unit malfunction; Body weight problems.
How do I fix a C212B diagnostic trouble code?
To fix C212B: Visual inspection of the SRS wiring harness. Checking contacts and voltage on sensor No. 3. Diagnostics of circuit resistance. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C212B?
Do not drive — repair immediately
How much does it cost to fix C212B?
The estimated repair cost for C212B is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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