VW Code 12871
12871 Description And Summary : |
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Diameter in engine o2 sensor out of range during deceleration bank 1 sensor 1 it can suddenly lead to a significantly more mil call-up circuit / transmission control module, short to ground or change ecm/pcm power relay sense, circuit intermittent will delay your vw fault. |
12871 Possible Causes:
12871 vw fault code may be caused by one or more of the following:
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Shift Solenoid E Performance or Stuck Off
- Exhaust Gas Recirculation Sensor B Circuit High
- Glow Plug/Heater Circuit 'A' Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- O2 Sensor Heater Circuit Malfunction
What To Check After Fixing 12871 Code
- Inspect all the connections angle sensors 1 for butterfly valve drive 2 (g297), signal too small
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns