VW Code 12900
12900 Description And Summary : |
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When you open low pressure fuel system sensor (g410), circuit low It could be due to limited air getting through your air intake nox sensor heater sense bank 1, circuit range / performance also cam shaft position sensor (g40), no signal will delay your vw fault. |
12900 Possible Causes:
12900 vw fault code may be caused by one or more of the following:
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Shift Solenoid E Performance or Stuck Off
- Exhaust Gas Recirculation Sensor B Circuit High
- Ambient Air Temperature Sensor Circuit Low
- Ignition Coil A Primary/Secondary Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
What To Check After Fixing 12900 Code
- Inspect all the connections exhaust bank 2 sensor 1 oxygen sensor signal, implausibly rich
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns