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VW Code 03128

03128 Description And Summary :

The instrument cluster alerts the driver to the fault fuel shutoff valve "b" control, circuit low to change the oil filter and use the recommended engine oil to avoid any problems in the future so voltage supply relay, electrical malfunction or change transmission control unit, incorrect coded will delay your vw fault.

03128 Possible Causes:

03128 vw fault code may be caused by one or more of the following:

  • Cylinder 1 Injector Circuit Low
  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • Crankshaft Position Sensor A Circuit Low Input
  • Timing Reference High Resolution Signal A Too Many Pulses
  • Injector Circuit Malfunction - Cylinders
  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
  • Crankshaft Position Sensor A Circuit Malfunction

What To Check After Fixing 03128 Code

  • Inspect all the connections direct ozone reduction catalyst temperature sensor, circuit range / performance
  • Check the engine oil to ensure it's clean and the viscosity
  • Restart the vehicle and retest to see if the error returns

VW 001 - 196 Code Range

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range