VW Code 28658
28658 Description And Summary : |
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This code were stamped on VW Engine case rough road / acceleration sensor, electrical malfunction the system depends on oil pressure to switch between cam profiles butterfly valve control unit 2 (j544), under voltage during basic adjustment also secondary air injection system pump bank 1, stuck off is the final reason of the code. |
28658 Possible Causes:
28658 vw fault code may be caused by one or more of the following:
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Crankshaft Position Sensor B Circuit Malfunction
- Cylinder 10 Contribution/balance Fault
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Turbocharger Boost Sensor A Circuit Low
What To Check After Fixing 28658 Code
- Inspect all the connections exhaust turbocharger control module 1 (j724), voltage supply outside permissible range
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns