What Does P0C67 Mean?
This code indicates the generator position sensor circuit "A" is producing a signal voltage above the maximum threshold recognized by the hybrid controller. This is typically caused by a short to the voltage supply, an open ground return path, or an internal sensor fault. The controller cannot accurately determine generator rotor position, which will disable or severely restrict generator operation for engine starting and power generation.
Safety Warning
A high signal fault on the generator position sensor prevents safe generator control. Failed engine starts, loss of charging capability, and disabled regenerative braking may result. Risk of being stranded if the battery depletes.
Common Causes
33%
Short to supply voltage in the circuit A signal wiring
25%
Open or high-resistance ground return wire in circuit A
20%
Internal sensor failure producing over-range voltage on circuit A
14%
Connector damage bridging supply and signal pins
8%
Hybrid controller input circuit malfunction
Diagnostic Steps
1
Measure circuit A signal voltage at the hybrid controller connector to confirm the over-voltage condition.
2
Disconnect the generator position sensor and recheck the voltage—if still high, the fault is in the harness or controller.
3
Test the ground return wire for continuity and low resistance from the sensor to the controller ground reference.
4
Inspect the connector for heat damage, melted pins, or conductive contamination—generator area connectors are prone to thermal stress.
5
If wiring checks pass, perform hybrid controller diagnostics to evaluate the circuit A input stage.
Estimated Repair Cost
$300 - $1,800
Parts + labor, varies by vehicle and location
This code indicates the generator position sensor circuit "A" is producing a signal voltage above the maximum threshold recognized by the hybrid controller. This is typically caused by a short to the voltage supply, an open ground return path, or an internal sensor fault. The controller cannot accur...
The most common cause of P0C67 (Generator Position Sensor Circuit "A" High) is: Short to supply voltage in the circuit A signal wiring
Typical repair costs for P0C67 range from $300 to $1,800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
A high signal fault on the generator position sensor prevents safe generator control. Failed engine starts, loss of charging capability, and disabled regenerative braking may result. Risk of being stranded if the battery depletes.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0C67 to identify the root cause.
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Quick Info
Category
Powertrain
System
Hybrid/EV Generator System
Difficulty
Type
Generic (SAE)
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