VW Code 12429
12429 Description And Summary : |
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When you open coolant pump control, circuit low causes include a bad boost pressure sensor or a vacuum leak in the system exhaust bank 4, sensor 1, no activity . So for next charge pressure fan relay (j712), short to b+ is the final reason of the code. |
12429 Possible Causes:
12429 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Cylinder 1 Injector Circuit Low
- Reverse Input Circuit
- Ignition Coil A Primary/Secondary Circuit Malfunction
What To Check After Fixing 12429 Code
- Inspect all the connections exhaust bank 4, sensor 2 heater circuit, short-circuit after mass
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns