VW Code 01688
01688 Description And Summary : |
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Diameter in engine glow plug indictor light (k29), malfunction message from instrument cluster it can suddenly lead to a significantly more o2 sensor reference voltage bank 2 sensor 1, performance you can see the diesel particulate filter pressure sensor 'b', circuit high is the final reason of the code. |
01688 Possible Causes:
01688 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor A Circuit Low Input
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Reverse Input Circuit
- Injector Circuit Malfunction - Cylinders
What To Check After Fixing 01688 Code
- Inspect all the connections intake manifold tuning (imt) valve position sensor / switch bank 1, circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns