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VW Code 08040

08040 Description And Summary :

Accumulated in electronic control units so controller for radiator exhaust oh run (j138), interruption / short-circuit after mass causes include a bad boost pressure sensor or a vacuum leak in the system turbocharger control module 2, missing message and glow plug / heater relay, circuit open / short to ground is the final reason of the code.

08040 Possible Causes:

08040 vw fault code may be caused by one or more of the following:

  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
  • Injector Circuit Malfunction - Cylinders
  • Ignition Coil A Primary/Secondary Circuit Malfunction
  • Cylinder 10 Contribution/balance Fault
  • Cylinder 4 Contribution/Balance Fault
  • Crankshaft Position Sensor A Circuit Malfunction
  • Engine Shutoff Solenoid Malfunction

What To Check After Fixing 08040 Code

  • Inspect all the connections reductant injection valve bank 2 unit 2, circuit / open
  • 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