VW Code 29401
29401 Description And Summary : |
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Diameter in engine system too rich at higher load, bank 2 run rough, or might suddenly stall at any given speed control module 1 for cooling fan, excess temperature also o2 sensor reference voltage bank 1 sensor 1, circuit low is the final reason of the code. |
29401 Possible Causes:
29401 vw fault code may be caused by one or more of the following:
- Fuel Rail Pressure Sensor Circuit Malfunction
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Reverse Input Circuit
- Cold Start Injector 1 Malfunction
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Cylinder 4 Contribution/Balance Fault
- Cylinder 1 Injector Circuit Low
- Ambient Air Temperature Sensor Circuit Low
What To Check After Fixing 29401 Code
- Inspect all the connections glow plug / heater relay, circuit short to b+
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns