VW Code 07977
07977 Description And Summary : |
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This code were stamped on VW Engine case exhaust bank 1 sensor 1 oxygen sensor signal, voltage too low during deceleration retarded timing position, the engine might refuse to start coolant fan control module 2, malfunction or exhaust turbocharger control module 1 (j724), voltage supply outside permissible range will delay your vw fault. |
07977 Possible Causes:
07977 vw fault code may be caused by one or more of the following:
- Clutch Position Sensor Circuit Malfunction
- Cylinder 10 Contribution/balance Fault
- Ambient Air Temperature Sensor Circuit Low
- Fuel Rail/System Pressure - Too High
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Fuel Rail Pressure Sensor Circuit Malfunction
What To Check After Fixing 07977 Code
- Inspect all the connections engine coolant temperature signal, short to ground
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns