Open or high-resistance signal wire between the sensor and the PCM; Signal circuit shorted to voltage or to the sensor reference wire; Failed camshaft profile actuator position sensor; Corroded, loose, or damaged sensor connector or pins; Faulty camshaft profile actuator solenoid causing the sensor to read out of range; PCM internal fault on the signal input circuit (rare)

DTC codes / P2Cxx · Hybrid propulsion / P2C1D

P2C1DB Camshaft Profile Actuator Position Sensor C Circuit High Bank 1

P2C1D means the powertrain control module (PCM) has detected a high-voltage condition on the signal circuit for the 'C' camshaft profile actuator position sensor on bank 1. The sensor reports the actual position of the camshaft profile actuator, and a high signal voltage tells the PCM the circuit is likely open, shorted to voltage, or the sensor reference is lost.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaHybrid propulsion

Symptoms you may notice

Illumination of the check engine light, often with no other noticeable symptoms
Rough idle or unstable engine operation when the cam profile changes
Reduced engine power or limp mode under certain driving conditions
Poor fuel economy or increased emissions
Intermittent hesitation or stumble during acceleration

Common causes, most likely first

Open or high-resistance signal wire between the sensor and the PCM
Signal circuit shorted to voltage or to the sensor reference wire
Failed camshaft profile actuator position sensor
Corroded, loose, or damaged sensor connector or pins
Faulty camshaft profile actuator solenoid causing the sensor to read out of range
PCM internal fault on the signal input circuit (rare)

How to diagnose and fix it

Inspect the sensor connector and wiring for corrosion, chafing, or loose pins
Measure reference voltage and ground at the sensor connector with the key on
Check the signal circuit voltage with a multimeter and compare to specification
Perform a wiggle test on the harness while monitoring the sensor signal on a scan tool
Replace the camshaft profile actuator position sensor if the circuit tests good but the signal stays high
Verify the camshaft profile actuator moves freely and the solenoid is not stuck
Clear the code and perform a road test to confirm the repair

What a high signal really tells you

A high signal voltage often means the PCM is seeing an open circuit rather than a failed sensor, so always check continuity before replacing parts.
The camshaft profile actuator position sensor shares a reference and ground with other sensors on many engines, so a fault in a shared circuit can set this code.
A sticking camshaft profile actuator can cause the sensor to report a position outside its expected range, mimicking a sensor circuit high code.
After repairs, some vehicles require a camshaft profile actuator relearn procedure before the code will stay cleared.
This code can be set by a momentary voltage spike during engine cranking if the battery is weak, so check battery condition first.

Can I keep driving with P2C1D?

You can usually drive the vehicle with this code, but avoid aggressive acceleration and heavy loads until it is repaired. If the engine runs rough or enters limp mode, have it diagnosed promptly to prevent further damage.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.