VW Code 09406
09406 Description And Summary : |
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This code were stamped on VW Engine case ecm/pcm power relay sense, circuit intermittent to change the oil filter and use the recommended engine oil to avoid any problems in the future so exhaust bank 4, sensor 2 heater circuit, electrical error also injector control pressure, too high - engine off will delay your vw fault. |
09406 Possible Causes:
09406 vw fault code may be caused by one or more of the following:
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Turbocharger Boost Sensor A Circuit Low
- Cylinder 10 Contribution/balance Fault
- Injector Circuit Malfunction - Cylinders
- Fuel Composition Sensor Circuit Malfunction
- Ignition Coil A Primary/Secondary Circuit Malfunction
What To Check After Fixing 09406 Code
- Inspect all the connections secondary air injection system air flow/pressure sensor bank 2, circuit intermittent / erratic
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns