How to fix a P0021 engine code: "A" Camshaft Position Timing OverAdvanced (Bank 2)
A P0021 code is set when the computer sees the position of the intake camshaft on bank 2 is more advanced than it should be.

Possible Causes of a P0021 Code:
Low or Dirty Engine Oil
Variable Valve Timing Solenoid
Actuator
Timing Chain or Chain Tensioner
Cam and Crank Sensors (Will Usually Get Other Codes)

The information in this video is based on the OBDII protocol definitions, manuals, and my own experience. Always pay attention to any other DTC codes as they may point to a different cause.
If you have fixed this code and have information not provided let us know in the comments.
By using this information user assumes all risk of use.
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