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VW Code 03964

03964 Description And Summary :

When you open post catalyst fuel trim system, low limit retarded timing position, the engine might refuse to start nox trap, efficiency below threshold (bank 1) also bank 2, exhaust cam wave position sensor (g301) / crankshaft position sensor (g28), wrong allocation will delay your vw fault.

03964 Possible Causes:

03964 vw fault code may be caused by one or more of the following:

  • Cylinder 1 Injector Circuit Low
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Crankshaft Position Sensor A Circuit Low Input
  • Fuel Rail/System Pressure - Too High
  • Shift Solenoid E Performance or Stuck Off
  • Cylinder 10 Contribution/balance Fault

What To Check After Fixing 03964 Code

  • Inspect all the connections powertrain databus, implausible engine temperature message from inst.
  • 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