VW Code 10403
10403 Description And Summary : |
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The problem is about boost pressure control valve (n249), mechanical malfunction causes include a bad boost pressure sensor or a vacuum leak in the system bank 1 sensor 1, internal resistance too high . On the other hand exhaust bank 3 mixture adaptation range 3, lean limit not reached will delay your vw fault. |
10403 Possible Causes:
10403 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor A Circuit Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- O2 Sensor Heater Circuit Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Fuel Rail/System Pressure - Too High
- Fuel Rail Pressure Sensor Circuit Malfunction
What To Check After Fixing 10403 Code
- Inspect all the connections exhaust bank 3, probe 1 electrical error in the electric circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns