Damaged or chafed wiring in the sensor signal circuit, causing a short to ground; Corroded or loose electrical connector at the sensor or PCM; Failed camshaft profile actuator position sensor; Internal short in the sensor or actuator assembly; Faulty powertrain control module, though rare; Oil contamination or debris interfering with the sensor signal

DTC codes / P2Cxx · Hybrid propulsion / P2C1C

P2C1CB Camshaft Profile Actuator Position Sensor C Circuit Low Bank 1

P2C1C indicates that the powertrain control module has detected a low-voltage condition on the signal circuit for the Bank 1 C camshaft profile actuator position sensor, which monitors the variable valve timing or lift system. The sensor's output is below the expected range, so the computer cannot reliably determine the actuator's position and may limit the system's operation.

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
Reduced engine power or a limp-home mode if the system defaults to a fixed camshaft position
Rough idle or poor engine performance, especially at low speeds
Decreased fuel economy due to inefficient valve timing
Intermittent hesitation or stumble during acceleration

Common causes, most likely first

Damaged or chafed wiring in the sensor signal circuit, causing a short to ground
Corroded or loose electrical connector at the sensor or PCM
Failed camshaft profile actuator position sensor
Internal short in the sensor or actuator assembly
Faulty powertrain control module, though rare
Oil contamination or debris interfering with the sensor signal

How to diagnose and fix it

Perform a visual inspection of the sensor wiring and connector for damage or corrosion
Use a scan tool to check live data for the sensor signal and compare to specifications
Measure resistance and voltage on the signal circuit with a digital multimeter to check for a short to ground
Disconnect the sensor and check for a change in the code or signal, indicating a sensor fault
Replace the camshaft profile actuator position sensor if testing confirms it is faulty
Repair or replace damaged wiring or connectors as needed
Clear the code and verify the repair with a test drive and recheck

Don't overlook the wiring harness

A common cause of this code is a chafed wire in the harness near the engine, often missed because the sensor itself tests good.
The code can set intermittently due to vibration or heat, so a wiggle test of the harness while monitoring live data is essential.
Replacing the sensor without checking the signal circuit can lead to a repeat failure if the underlying wiring issue remains.
Oil sludge or debris can block the actuator and cause the sensor to read low, so check oil condition and actuator movement.
This code may be accompanied by other camshaft or crankshaft codes, indicating a more widespread electrical issue.

Can I keep driving with P2C1C?

You can usually drive the vehicle with this code, but avoid aggressive acceleration or heavy loads because the engine may enter a reduced-power mode. Have the fault diagnosed soon to prevent potential damage to the variable valve timing system.

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.