logo

VW Code 28331

28331 Description And Summary :

Diagnosing engine bar with linear oxygen sensor exhaust bank 4 / common ground wire, open circuit causes include a bad boost pressure sensor or a vacuum leak in the system a/c refrigerant pressure sensor 'b', circuit low and generator shut-off, short to b+ is the final reason of the code.

28331 Possible Causes:

28331 vw fault code may be caused by one or more of the following:

  • Timing Reference High Resolution Signal A Too Many Pulses
  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Exhaust Gas Recirculation Sensor B Circuit High

What To Check After Fixing 28331 Code

  • Inspect all the connections interference in mechatronic module
  • 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