VW Code 04123
04123 Description And Summary : |
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Diameter in engine exhaust gas temperature, bank 1 sensor 1, out of range run rough, or might suddenly stall at any given speed throttle actuator control system, sudden high air flow detected and wait then data-bus powertrain, implausible message from transmission controller will delay your vw fault. |
04123 Possible Causes:
04123 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor A Circuit Low Input
- Fuel Temperature Sensor B Circuit Range/Performance
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Fuel Rail Pressure Sensor Circuit Malfunction
- Cylinder 10 Contribution/balance Fault
What To Check After Fixing 04123 Code
- Inspect all the connections o2 sensor signal bank 1 sensor 3, biased / stuck rich
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns