What does p0012 intake camshaft position timing over retarded mean?

Question

2002 Volkswagen Passat 4 Cyl Turbo, what does p0012 intake camshaft position timing over retarded mean?

Answer 1

Engine Management Systems (EMS) use the camshaft position sensor to manage sequential fuel injection and as part of misfire diagnosis. The EMS constantly monitors the number of pulses on the signal circuit. The EMS compares the number of camshaft sensor reference pulses and the number of crankshaft position sensor reference pulses received. If the EMS receives an incorrect number of pulses, Diagnostic Trouble Codes (DTC) should be stored in the EMS.

In other words, the signals from the camshaft position sensor and the crankshaft position sensor are not making sense to the ESM. Either one of the sensors is bad or the timing belt is out of time or stretched out.

P0012 VOLKSWAGEN - 'A' Camshaft Position Timing Over Retarded Bank 1
Read more: https://www.autocodes.com/p0012_volkswagen.html