VW Code 04166
04166 Description And Summary : |
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Diameter in engine o2 sensor negative current control bank 2 sensor 1, circuit low run rough, or might suddenly stall at any given speed injector control pressure sensor, circuit intermittent or change torque management feedback signal "b" will delay your vw fault. |
04166 Possible Causes:
04166 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Cylinder 4 Contribution/Balance Fault
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Exhaust Gas Recirculation Sensor B Circuit High
What To Check After Fixing 04166 Code
- Inspect all the connections actuator supply voltage 'c', 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