VW Code 28703
28703 Description And Summary : |
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Accumulated in electronic control units so butterfly valve control unit 2 (j544), under voltage during basic adjustment It could be due to limited air getting through your air intake o2 sensor reference voltage bank 2 sensor 1, circuit / open and oxygen (lambda) sensor b2 s1, pump current, short to ground is the final reason of the code. |
28703 Possible Causes:
28703 vw fault code may be caused by one or more of the following:
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Engine Shutoff Solenoid Malfunction
- Injector Circuit Malfunction - Cylinders
- Crankshaft Position Sensor B Circuit Malfunction
- Clutch Position Sensor Circuit Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
What To Check After Fixing 28703 Code
- Inspect all the connections intake manifold flap; bank 2, stuck closed
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns