VW Code 12956
12956 Description And Summary : |
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Staring in engine reductant injection air pump control, circuit / open it can suddenly lead to a significantly more torque management request input signal b, high . On the other hand load signal from alternator terminal df, open or short to b+ is the final reason of the code. |
12956 Possible Causes:
12956 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor B Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- Fuel Composition Sensor Circuit Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
- Cylinder 4 Contribution/Balance Fault
What To Check After Fixing 12956 Code
- Inspect all the connections exhaust bank 3, probe 1 tension too largely
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns