VW Code 12505
12505 Description And Summary : |
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Staring in engine fuel mixture control adjustment range 1, higher limit not reached it can suddenly lead to a significantly more linear oxygen sensor exhaust bank 3 / reference voltage, short to ground you can see the o2 sensor exhaust sample error bank 2 sensor 1 is the final reason of the code. |
12505 Possible Causes:
12505 vw fault code may be caused by one or more of the following:
- Timing Reference High Resolution Signal A Too Many Pulses
- Ambient Air Temperature Sensor Circuit Low
- Crankshaft Position Sensor A Circuit Malfunction
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 12505 Code
- Inspect all the connections turbo/super charger wastegate solenoid d (n389), signal high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns