VW Code 09400
09400 Description And Summary : |
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Accumulated in electronic control units so transmission control unit relay, malfunction causes include a bad boost pressure sensor or a vacuum leak in the system 'b' rocker arm actuator system, stuck on . So for next hydraulic actuator valve (n331), electrical malfunction is the final reason of the code. |
09400 Possible Causes:
09400 vw fault code may be caused by one or more of the following:
- Fuel Composition Sensor Circuit Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Cold Start Injector 1 Malfunction
What To Check After Fixing 09400 Code
- Inspect all the connections system too rich at higher load, bank 2
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns