Description of OBD-II DTC Trouble Code
The “A” Camshaft Position – Timing Over-Retarded (Bank 2)
What is the meaning of this?
This diagnostic trouble code (DTC) is a generic powertrain code, which means it applies to OBD-II equipped vehicles, including Toyota, VW, Ford, Dodge, Honda, Chevrolet, Hyundai, Audi, Acura, etc.
A P0022 code refers to the VVT (variable valve timing) or VCT (variable camshaft timing) components and the car’s PCM (powertrain control module) or ECM (engine control module). VVT is a technology used in the engine to allow it to achieve greater power or efficiency at different running points.
This consists of several different components, but the P0022 DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is over-retarded, the engine light will illuminate and the code will be set. The “A” camshaft can be either the intake, left, or front camshaft.
Possible Symptoms
Most likely, a P0022 DTC will result in one of the following:
There may also be other potential symptoms. When trouble codes are set, the MIL (malfunction indicator lamp, also known as the check engine light) will illuminate.
Possible Causes
A P0022 DTC trouble code may be caused by one or more of the following:
Possible Solutions
The main thing to check is the operation of the VCT solenoid. Look for a sticking or stuck VCT solenoid valve caused by contamination. Refer to the vehicle-specific repair manual to perform component tests for the VCT unit. Notes: Dealer technicians have advanced tools and the ability to follow detailed troubleshooting steps, including the ability to test components using a scan tool.
Other related DTCs: P0010 – P0011 – P0012 – P0020 – P0021
