squall ... 11/4/2012
2007 Mercedes Benz E63 AMG Base 8 Cyl 6.3L
My check engine light came on and I took it by Auto Zone to pull the code and it said P0021 cam shaft position sensor.
Is this a DYI or do I nee to take it to the shop. when I google it, it keep coming back as a crank shaft position sensor. the car is running find with 67.000 miles
A code P0021 refers to the VVT (variable valve timing) or VCT (variable camshaft timing) components and the car's PCM (powertrain control module, also called an ECM). That consists of a few different components but the P0021 DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is above a set limit (over-advanced), the engine light will be illluminated and the code will be set. The "A" camshaft is either the intake, left, or front camshaft. A P0021 engine code is basically the same as a P0011 code, except this is for Bank 2, not Bank 1.