VW Code 04956
04956 Description And Summary : |
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This code were stamped on VW Engine case secondary air injection system control 'a', circuit high It could be due to limited air getting through your air intake o2 sensor reference voltage bank 1 sensor 1, circuit high . On the other hand a/c request a, circuit low is the final reason of the code. |
04956 Possible Causes:
04956 vw fault code may be caused by one or more of the following:
- Reverse Input Circuit
- Crankshaft Position Sensor A Circuit Low Input
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Fuel Composition Sensor Circuit Malfunction
- Crankshaft Position Sensor B Circuit Malfunction
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Cylinder 1 Injector Circuit Low
- Glow Plug/Heater Circuit 'A' Malfunction
What To Check After Fixing 04956 Code
- Inspect all the connections accelerator position sensor 2 (g185), signal too low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns