C0218
Longitudinal Accelerometer Signal Voltage
C0218 is an OBD-II diagnostic trouble code meaning: Longitudinal Accelerometer Signal Voltage. Common causes: open or short circuit in wiring harness, longitudinal accelerometer malfunction. Estimated repair cost: $56–167.
Symptoms
- Airbag light is on
- Incorrect operation of the passive safety system
- Errors in other security-related systems
Causes
- Open or short circuit in wiring harness
- Longitudinal accelerometer malfunction
- Problems with power or circuit ground
- Contact corrosion
- Software error in the control unit
How to Fix
- Check wiring harness for damage
- Check the voltage and resistance in the sensor circuit
- Inspect contacts for corrosion
- Replace the faulty sensor if necessary
- Reflash the control unit if required
Related codes
Error C0218 by Vehicle Brand
FAQ
What does the C0218 code mean?
C0218 is an OBD-II diagnostic trouble code that indicates: Longitudinal Accelerometer Signal Voltage
What causes a C0218 error code?
The most common causes of C0218 include: Open or short circuit in wiring harness; Longitudinal accelerometer malfunction; Problems with power or circuit ground; Contact corrosion.
How do I fix a C0218 diagnostic trouble code?
To fix C0218: Check wiring harness for damage. Check the voltage and resistance in the sensor circuit. Inspect contacts for corrosion. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C0218?
Do not drive — repair immediately
How much does it cost to fix C0218?
The estimated repair cost for C0218 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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