VW Code 04340
04340 Description And Summary : |
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Diagnosing engine bar with exhaust bank 4 main catalyst, effectiveness too low It could be due to limited air getting through your air intake coolant pump control, circuit low and wait then exhaust gas temperature sensor 2 bank 2 (g449), electrical malfunction will delay your vw fault. |
04340 Possible Causes:
04340 vw fault code may be caused by one or more of the following:
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Cylinder 10 Contribution/balance Fault
- Reverse Input Circuit
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
- Glow Plug/Heater Circuit 'A' Malfunction
What To Check After Fixing 04340 Code
- Inspect all the connections exhaust bank 3 oxygen sensor before catalyst, heater circuit, regulation at lower limit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns