VW Code 03123
03123 Description And Summary : |
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Staring in engine exhaust gas temperature sensor 2 bank 1 (g448), high it can suddenly lead to a significantly more oxygen (lambda) sensor b2 s3, signal shorted to heater circuit you can see the diesel particulate filter pressure sensor 'a', circuit intermittent / erratic is the final reason of the code. |
03123 Possible Causes:
03123 vw fault code may be caused by one or more of the following:
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Fuel Composition Sensor Circuit Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- Fuel Rail/System Pressure - Too High
What To Check After Fixing 03123 Code
- Inspect all the connections friction too high, exhaust cam adjustment bank 1
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns