VW Code 12318
12318 Description And Summary : |
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When you open supply voltage for fuel injector group a, short to ground It could be due to limited air getting through your air intake linear oxygen sensor exhaust bank 2 / reference voltage, short to b+ and wait then vehicle speed signal, circuit short to b+ will delay your vw fault. |
12318 Possible Causes:
12318 vw fault code may be caused by one or more of the following:
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Ambient Air Temperature Sensor Circuit Low
- O2 Sensor Heater Circuit Malfunction
- Fuel Rail/System Pressure - Too High
- Cylinder 4 Contribution/Balance Fault
What To Check After Fixing 12318 Code
- Inspect all the connections exhaust gas temperature sensor, bank 2 sensor 5, circuit range / performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns