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VW Code 03951

03951 Description And Summary :

The problem is about relays for coolant additive pump (j496), short to b+ it can suddenly lead to a significantly more ignition coil 'l' primary control, circuit low you can see the please check dtc memory of adr control module is the final reason of the code.

03951 Possible Causes:

03951 vw fault code may be caused by one or more of the following:

  • Injector Circuit Malfunction - Cylinders
  • Ignition Coil A Primary/Secondary Circuit Malfunction
  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • Fuel Rail/System Pressure - Too High
  • Crankshaft Position Sensor A Circuit Malfunction
  • Ambient Air Temperature Sensor Circuit Low

What To Check After Fixing 03951 Code

  • Inspect all the connections exhaust bank 3/4 lambda probes before kat exchanges
  • 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