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VW Code 02123

02123 Description And Summary :

This something to do with the intake camshaft timing throttle angle signal stuck off the system depends on oil pressure to switch between cam profiles exhaust bank 1 sensor 1 individual cylinder control, sensor dynamic too low also accelerator pedal position sensor 1 (g79), signal too low will delay your vw fault.

02123 Possible Causes:

02123 vw fault code may be caused by one or more of the following:

  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
  • Crankshaft Position Sensor A Circuit Malfunction
  • O2 Sensor Heater Circuit Malfunction
  • Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
  • Fuel Rail/System Pressure - Too High
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Cold Start Injector 1 Malfunction

What To Check After Fixing 02123 Code

  • Inspect all the connections cylinder 1 above knock threshold
  • 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