VW Code 03406
03406 Description And Summary : |
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Diameter in engine evaporative emissions (evap) fuel vapour temperature sensor, circuit low voltage causes include a bad boost pressure sensor or a vacuum leak in the system cylinder 5 above knock threshold or auxiliary engine coolant (ec) pump relay (j496), open or short to ground is the final reason of the code. |
03406 Possible Causes:
03406 vw fault code may be caused by one or more of the following:
- Fuel Temperature Sensor B Circuit Range/Performance
- Injector Circuit Malfunction - Cylinders
- Crankshaft Position Sensor A Circuit Low Input
- Ignition Coil A Primary/Secondary Circuit Malfunction
What To Check After Fixing 03406 Code
- Inspect all the connections valve for pump - jet, cylinder 2 (n241), 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