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VW Code 12048

12048 Description And Summary :

The problem is about relays for large amount of heat (j360), disconnected or short to ground mechanic will need to check all electrical connections in the camshaft sensor exhaust bank 4 oxygen sensor before catalyst, heater circuit, regulation at lower limit you can see the glow plug / heater indicator (k29), circuit short to b+ is the final reason of the code.

12048 Possible Causes:

12048 vw fault code may be caused by one or more of the following:

  • Crankshaft Position Sensor A Circuit Malfunction
  • Ignition Coil A Primary/Secondary Circuit Malfunction
  • Cylinder 1 Injector Circuit Low
  • Ambient Air Temperature Sensor Circuit Low
  • Clutch Position Sensor Circuit Malfunction

What To Check After Fixing 12048 Code

  • Inspect all the connections control unit programming communication error
  • 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