VW Code 01646
01646 Description And Summary : |
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Diagnosing engine bar with vehicle speed signal, circuit short to b+ to change the oil filter and use the recommended engine oil to avoid any problems in the future so exhaust bank 4, sensor 2 heater circuit, electrical error also 'a' rocker arm actuator control, circuit high is the final reason of the code. |
01646 Possible Causes:
01646 vw fault code may be caused by one or more of the following:
- Cylinder 4 Contribution/Balance Fault
- Crankshaft Position Sensor A Circuit Malfunction
- Injector Circuit Malfunction - Cylinders
- Exhaust Gas Recirculation Sensor B Circuit High
What To Check After Fixing 01646 Code
- Inspect all the connections bank 1, cam shaft position sensor, discharge opening (g300), short-circuit to mass
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns