VW Code 12800
12800 Description And Summary : |
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Diagnosing engine bar with throttle/pedal position sensor / switch 'a' / 'c', voltage correlation causes include a bad boost pressure sensor or a vacuum leak in the system relays for large amount of heat (j360), short-circuit after pluses also relays for pump, fuel cooling (j445), short-circuit after pluses will delay your vw fault. |
12800 Possible Causes:
12800 vw fault code may be caused by one or more of the following:
- Fuel Composition Sensor Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Glow Plug/Heater Circuit 'A' Malfunction
- Injector Circuit Malfunction - Cylinders
- Cold Start Injector 1 Malfunction
- Engine Oil Temperature Sensor Malfunction
What To Check After Fixing 12800 Code
- Inspect all the connections ignition coil 'e' primary control, short to plus
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns