P2C0C: A Camshaft Profile Actuator Position Sensor B Circuit High Bank 1

What it means

The control module detects a high signal from camshaft profile actuator position sensor B on bank 1. The signal does not reliably indicate the actuator’s position.

At a glance

• Usually lights the check-engine light
• Affects emissions; the car can fail an emissions test
• The engine or gearbox may go into limp mode

How it works

The camshaft profile actuator changes the engine’s valve profile, and position sensor B reports the actuator’s position to the control module. The module sets P2C0C when the Bank 1 sensor B signal rises above its expected electrical range, so it cannot reliably track actuator position.

Common causes

Most likely first.

1. Signal wire shorted to B+
2. Open position sensor
3. Connector pins corroded - high contact resistance

Symptoms

• Check engine light on
• Power loss especially in mid-rpm range
• Possible rough idle or stalling
• Increased fuel consumption

How to diagnose it

1. Record freeze-frame data and compare live sensor B position on Bank 1 with commanded actuator position to see when the high reading occurs.
2. Inspect sensor B’s Bank 1 wiring and connector for corrosion, loose pins, insulation damage, or contact with a power feed.
3. Check the sensor circuit’s supply, ground, and signal using the vehicle wiring information, looking for a signal wire shorted to B+.
4. Move the harness while monitoring the signal to identify an intermittent high reading or poor connection.
5. If the wiring and connector are sound, test sensor B on Bank 1 for an open or failed sensor against the manufacturer’s specification.

Common fixes

• Clean and secure corroded or loose connector pins at Bank 1 sensor B.
• Repair wiring shorted to B+ or damaged wiring in the sensor B circuit.
• Replace an open or failed camshaft profile actuator position sensor B on Bank 1.
• Clear the code and confirm sensor B tracks actuator movement.

Can I keep driving?

Drive gently only if the engine runs smoothly; avoid hard acceleration because Bank 1 valve-profile control may be limited. Stop if it stalls, loses substantial power, or enters limp mode.