VW Code 28798
28798 Description And Summary : |
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The problem is about butterfly valve control unit 2 (j544), under voltage during basic adjustment mechanic will need to check all electrical connections in the camshaft sensor injector control pressure regulator, circuit high . On the other hand intake manifold tuning valve (bank 1), stuck closed is the final reason of the code. |
28798 Possible Causes:
28798 vw fault code may be caused by one or more of the following:
- Exhaust Gas Recirculation Sensor B Circuit High
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Engine Oil Temperature Sensor Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
- Clutch Position Sensor Circuit Malfunction
- Crankshaft Position Sensor B Circuit Malfunction
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
What To Check After Fixing 28798 Code
- Inspect all the connections synchronisation line
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns