"A" Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)
symptoms
Hard starting, bad idle and possibly stalling issues
caused by
Incorrect camshaft timing
Wiring issues (harness/wiring) in intake timing control valve control solenoid system
Steady oil flow to VCT piston chamber
Faulty timing valve control solenoid (stuck open)
the fix
This code indicated a mechanical issue, electrical troubleshooting wont help so replacement of the VCT or one of it's related components is necessary.
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Code PO117 on a 1998 VW Passat 1.8T engine (AEB) indicates an issue with the engine coolant temperature (ECT) sensor or its circuit. To fix this, first, check the wiring and connectors for any damage or corrosion. If they are in good condition, replace the ECT sensor, as it may be faulty. After replacing the sensor, clear the code and monitor for any recurrence.
My 2001 VW Passat is has the same problem!!
"A" Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)symptomsHard starting, bad idle and possibly stalling issuescaused byIncorrect camshaft timingWiring issues (harness/wiring) in intake timing control valve control solenoid systemSteady oil flow to VCT piston chamberFaulty timing valve control solenoid (stuck open)the fixThis code indicated a mechanical issue, electrical troubleshooting wont help so replacement of the VCT or one of it's related components is necessary.
"A" Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)symptomsHard starting, bad idle and possibly stalling issuescaused byIncorrect camshaft timingWiring issues (harness/wiring) in intake timing control valve control solenoid systemSteady oil flow to VCT piston chamberFaulty timing valve control solenoid (stuck open)the fixThis code indicated a mechanical issue, electrical troubleshooting wont help so replacement of the VCT or one of it's related components is necessary.
Engine speed sensor circuit malfunction.
You have a circuit problem on the camshaft position 1 sensor.
Trouble code P2100 means: Throttle Actuator Control Motor Circuit/Open
I'll include a link to a YouTube video that will show you exactly how to fix this on your 2001 Volkswagon Passat. Hope this helps you out.
Figure out what tripped the code and fix the problem
Replace the catalytic converterReplace the catalytic converter