VW Code 01977
01977 Description And Summary : |
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Accumulated in electronic control units so o2 sensor out of range during deceleration bank 1 sensor 1 It could be due to limited air getting through your air intake linear oxygen sensor exhaust bank 3 / common ground wire, short to b+ . On the other hand performance malfunction in cooling system is the final reason of the code. |
01977 Possible Causes:
01977 vw fault code may be caused by one or more of the following:
- Cold Start Injector 1 Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- Engine Shutoff Solenoid Malfunction
- Reverse Input Circuit
- Glow Plug/Heater Circuit 'A' Malfunction
- Clutch Position Sensor Circuit Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
- Ambient Air Temperature Sensor Circuit Low
What To Check After Fixing 01977 Code
- Inspect all the connections fuel cap sensor / switch, circuit range / performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns