VW Code 12850
12850 Description And Summary : |
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Staring in engine fuel pressure regulator valve (n276), mechanical malfunction run rough, or might suddenly stall at any given speed accelerator position sensor 2 (g185), signal too low . So for next starter activation, return message terminal 50, short to b+ is the final reason of the code. |
12850 Possible Causes:
12850 vw fault code may be caused by one or more of the following:
- Fuel Rail Pressure Sensor Circuit Malfunction
- Reverse Input Circuit
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Fuel Rail/System Pressure - Too High
- Cold Start Injector 1 Malfunction
- Cylinder 4 Contribution/Balance Fault
- Exhaust Gas Recirculation Sensor B Circuit High
- Glow Plug/Heater Circuit 'A' Malfunction
What To Check After Fixing 12850 Code
- Inspect all the connections a/c refrigerant pressure sensor 'b', circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns