VW Code 04340
04340 Description And Summary : |
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The instrument cluster alerts the driver to the fault secondary air injection system control 'b', circuit low it can suddenly lead to a significantly more exhaust bank 3/4 lambda probes before kat exchanges or tiptronic switch up (f189), open circuit / signal to b+ will delay your vw fault. |
04340 Possible Causes:
04340 vw fault code may be caused by one or more of the following:
- Fuel Rail/System Pressure - Too High
- Fuel Rail Pressure Sensor Circuit Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Cylinder 4 Contribution/Balance Fault
- Exhaust Gas Recirculation Sensor B Circuit High
What To Check After Fixing 04340 Code
- Inspect all the connections engine coolant level sensor / switch, circuit 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