P0C66

Generator Position Sensor Circuit A Low

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check engine light is on
Battery charging problems
Reduced generator performance
Unstable operation of the vehicle's electrical systems

Causes

Generator position sensor malfunction
Open or short circuit in the sensor circuit
Poor connection in sensor connectors
Generator malfunction
Wiring Harness Problems

How to Fix

Check generator position sensor
Inspect the sensor circuit for damage
Check sensor connections and connectors
Test the generator for proper operation
If necessary, replace the sensor or repair the wiring

Related codes

P0C67 P0C68 P0C69