VW Code 12303
12303 Description And Summary : |
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This code were stamped on VW Engine case exhaust bank 3/4 lambda probes before kat exchanges to change the oil filter and use the recommended engine oil to avoid any problems in the future so vacuum reservoir pressure sensor, circuit high . So for next fuel injection valve 4 (n369), open circuit will delay your vw fault. |
12303 Possible Causes:
12303 vw fault code may be caused by one or more of the following:
- Cylinder 1 Injector Circuit Low
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Engine Shutoff Solenoid Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
- Turbocharger Boost Sensor A Circuit Low
What To Check After Fixing 12303 Code
- Inspect all the connections glow plug control module 2 (j703), electrical malfunction
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns