VW Code 12156
12156 Description And Summary : |
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This code were stamped on VW Engine case potentiometer 2 for egr (g466), incorrect basic setting it can suddenly lead to a significantly more post catalyst fuel trim system, high limit also ng high pressure valve (n372), short to b+ is the final reason of the code. |
12156 Possible Causes:
12156 vw fault code may be caused by one or more of the following:
- Glow Plug/Heater Circuit 'A' Malfunction
- Cylinder 4 Contribution/Balance Fault
- Shift Solenoid E Performance or Stuck Off
- Fuel Rail/System Pressure - Too High
- Crankshaft Position Sensor B Circuit Malfunction
What To Check After Fixing 12156 Code
- Inspect all the connections shift up/down wire, short to b+
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns