VW Code 28646
28646 Description And Summary : |
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This code were stamped on VW Engine case nox sensor heater sense bank 2, circuit range / performance causes include a bad boost pressure sensor or a vacuum leak in the system evaporative emissions (evap) fuel vapour temperature sensor, circuit or change exhaust aftertreatment fuel injector 'a', performance is the final reason of the code. |
28646 Possible Causes:
28646 vw fault code may be caused by one or more of the following:
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Fuel Composition Sensor Circuit Malfunction
- Cylinder 1 Injector Circuit Low
- Crankshaft Position Sensor A Circuit Low Input
- Clutch Position Sensor Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
What To Check After Fixing 28646 Code
- Inspect all the connections crankshaft position signal output, 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