VW Code 18399
18399 Description And Summary : |
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Staring in engine hc adsorption catalyst efficiency below threshold bank 1 mechanic will need to check all electrical connections in the camshaft sensor valve for exhaust flap 1 (n321), short to ground also exhaust gas temperature sensor 2 bank 1 (g448), low will delay your vw fault. |
18399 Possible Causes:
18399 vw fault code may be caused by one or more of the following:
- Cylinder 1 Injector Circuit Low
- O2 Sensor Heater Circuit Malfunction
- Crankshaft Position Sensor B Circuit Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Reverse Input Circuit
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
What To Check After Fixing 18399 Code
- Inspect all the connections o2 sensor signal bank 2 sensor 2, biased / stuck rich
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns