VW Code 12135
12135 Description And Summary : |
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Diameter in engine exhaust bank 4 sensor 1 heater circuit, internal resistance too large run rough, or might suddenly stall at any given speed activation starter relay 2, open circuit also wheel speed signal 1, range / performance is the final reason of the code. |
12135 Possible Causes:
12135 vw fault code may be caused by one or more of the following:
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Fuel Composition Sensor Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Cylinder 4 Contribution/Balance Fault
- Fuel Rail/System Pressure - Too High
- Exhaust Gas Recirculation Sensor B Circuit High
What To Check After Fixing 12135 Code
- Inspect all the connections fuel pump "b" control, circuit / open
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns