VW Code 18742
18742 Description And Summary : |
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Diagnosing engine bar with exhaust bank 3 main catalyst, effectiveness too low It could be due to limited air getting through your air intake fuel supply heater, control circuit low or change butterfly valve control unit 2 (j544) errors in basic adjustment is the final reason of the code. |
18742 Possible Causes:
18742 vw fault code may be caused by one or more of the following:
- Engine Shutoff Solenoid Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Cold Start Injector 1 Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Ignition Coil A Primary/Secondary Circuit Malfunction
What To Check After Fixing 18742 Code
- Inspect all the connections bank 1, system too lean off idle
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns