P002C: B Camshaft Profile Actuator A Control Circuit High Bank 1

What does P002C mean?

A camshaft profile actuator switches the exhaust camshaft (camshaft B) on bank 1 between two or more fixed cam profiles with different valve lift and duration, for example by shifting a cam piece axially or by locking rocker arms or tappets with oil pressure. Unlike a camshaft phaser it does not shift the timing continuously. The second letter "A" in the title numbers the actuator on this camshaft. This code is set when the control circuit reads too high, typically because of a short to battery voltage or overcurrent in the output stage. The engine usually stays on one profile, typically the base profile with low lift. Some manufacturers report these faults with their own codes instead.

The code tells you which monitor failed, not which part is broken. Test before replacing parts.

Symptoms

• Check engine light on
• Less power at high engine speed because the profile does not switch
• Higher consumption or uneven part-load running, depending on the profile
• Engine speed may be limited

Common causes

• High Control wire shorted to battery voltage
• Medium Actuator coil shorted, causing overcurrent
• Medium Connector corroded or contaminated with oil
• Low Output driver in the engine control module faulty

Likelihood is a general estimate across vehicles; your make and model may differ.