VW Code 18684
18684 Description And Summary : |
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The problem is about throttle position output, circuit high causes include a bad boost pressure sensor or a vacuum leak in the system fuel additive control module warning lamp request and wait then a/c request b, circuit low will delay your vw fault. |
18684 Possible Causes:
18684 vw fault code may be caused by one or more of the following:
- Cold Start Injector 1 Malfunction
- O2 Sensor Heater Circuit Malfunction
- Reverse Input Circuit
- Fuel Composition Sensor Circuit Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
What To Check After Fixing 18684 Code
- Inspect all the connections bank 1, system too rich at idle
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns