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VW Code 10121

10121 Description And Summary :

This something to do with the intake camshaft timing starter interlock, circuit short to b+ retarded timing position, the engine might refuse to start control module defective and throttle actuator control motor current, range / performance is the final reason of the code.

10121 Possible Causes:

10121 vw fault code may be caused by one or more of the following:

  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
  • Glow Plug/Heater Circuit 'A' Malfunction
  • Fuel Temperature Sensor B Circuit Range/Performance

What To Check After Fixing 10121 Code

  • Inspect all the connections intake manifold runner control, circuit low bank 2
  • 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