VW Code 12999
12999 Description And Summary : |
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The problem is about ignition coil 'g' secondary circuit, malfunction run rough, or might suddenly stall at any given speed diesel particulate filter pressure sensor 'b', circuit intermittent / erratic and valve for pump - jet: cylinder 8 (3040), electrical malfunction will delay your vw fault. |
12999 Possible Causes:
12999 vw fault code may be caused by one or more of the following:
- Shift Solenoid E Performance or Stuck Off
- Turbocharger Boost Sensor A Circuit Low
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Crankshaft Position Sensor B Circuit Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Engine Oil Temperature Sensor Malfunction
What To Check After Fixing 12999 Code
- Inspect all the connections reductant injection valve bank 2 unit 1, circuit high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns