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The P0022 diagnostic trouble code on your Audi indicates an issue with Camshaft Position A- Timing Over-Retarded (Bank 2). This means that the intake camshaft timing for bank 2 is not adjusting as much as the ECM is requesting. Possible causes include a stuck open variable camshaft timing (VCT) oil control valve, a damaged or stuck camshaft phaser, or oil flow issues to the VCT piston and phaser. To resolve this, you should first check the electrical connections to the camshaft sensor, and then inspect the oil control solenoid and crankshaft sensor for loose connections, damaged wiring, or component failure.
In an Audi car, if the code 00022 pops up, it indicates a problem with either the oil flow control valve being faulty or an issue with the timing of the camshaft.