C0218

Longitudinal Accelerometer Signal Voltage

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

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

B0020 B0021 C0219