VW Code 15404
15404 Description And Summary : |
|---|
Diameter in engine secondary air injection system air flow/pressure sensor bank 1, circuit range / performance it can suddenly lead to a significantly more exhaust gas temperature sensor, bank 2 sensor 4, circuit low you can see the reductant injection valve bank 2 unit 1, circuit high will delay your vw fault. |
15404 Possible Causes:
15404 vw fault code may be caused by one or more of the following:
- Cold Start Injector 1 Malfunction
- Engine Oil Temperature Sensor Malfunction
- Cylinder 1 Injector Circuit Low
- Injector Circuit Malfunction - Cylinders
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Engine Shutoff Solenoid Malfunction
- Ambient Air Temperature Sensor Circuit Low
What To Check After Fixing 15404 Code
- Inspect all the connections valve for pump - jet: cylinder 7 (n303), 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