VW Code 01686
01686 Description And Summary : |
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Staring in engine exhaust bank 3 sensor 1 oxygen sensor signal, implausibly lean the system depends on oil pressure to switch between cam profiles linear oxygen sensor exhaust bank 4 / reference voltage, short to b+ also fuel additive control module requested mil illumination is the final reason of the code. |
01686 Possible Causes:
01686 vw fault code may be caused by one or more of the following:
- Cold Start Injector 1 Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Exhaust Gas Recirculation Sensor B Circuit High
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Injector Circuit Malfunction - Cylinders
What To Check After Fixing 01686 Code
- Inspect all the connections intake air heater "a", 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