VW Code 127
127 Description And Summary : |
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Diagnosing engine bar with exhaust bank 4, sensor 2 heater circuit, electrical error run rough, or might suddenly stall at any given speed supply voltage for fuel injector group b, short to ground you can see the secondary air injection system bank 1, high air flow is the final reason of the code. |
127 Possible Causes:
127 vw fault code may be caused by one or more of the following:
- Timing Reference High Resolution Signal A Too Many Pulses
- Fuel Composition Sensor Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Fuel Rail/System Pressure - Too High
What To Check After Fixing 127 Code
- Inspect all the connections ignition coil cylinder 16, open circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns