VW Code 12251
12251 Description And Summary : |
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Accumulated in electronic control units so exhaust bank 4 sensor 1 heater circuit, short to b+ to change the oil filter and use the recommended engine oil to avoid any problems in the future so kick down switch malfunction or control module 1 for cooling fan, excess temperature is the final reason of the code. |
12251 Possible Causes:
12251 vw fault code may be caused by one or more of the following:
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Ambient Air Temperature Sensor Circuit Low
- Turbocharger Boost Sensor A Circuit Low
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Timing Reference High Resolution Signal A Too Many Pulses
- Cylinder 1 Injector Circuit Low
What To Check After Fixing 12251 Code
- Inspect all the connections throttle/pedal position sensor / switch 'f', circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns