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VW Code 01203

01203 Description And Summary :

When you open coolant fan control module 2, malfunction to change the oil filter and use the recommended engine oil to avoid any problems in the future so exhaust bank 1 sensor 1 individual cylinder control, sensor dynamic too low . So for next cannot activate controller reply function due to another error with equal priority will delay your vw fault.

01203 Possible Causes:

01203 vw fault code may be caused by one or more of the following:

  • Injector Circuit Malfunction - Cylinders
  • Turbocharger Boost Sensor A Circuit Low
  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • Cylinder 1 Injector Circuit Low
  • Ignition Coil A Primary/Secondary Circuit Malfunction
  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)

What To Check After Fixing 01203 Code

  • Inspect all the connections bank 2, cam shaft position sensor, discharge opening (g301), interruption / short-circuit to pluses
  • 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