VW Code 00684
00684 Description And Summary : |
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The problem is about catalyst system exhaust bank 4, effectiveness too low causes include a bad boost pressure sensor or a vacuum leak in the system injector data, incompatible you can see the exhaust aftertreatment fuel injector 'a', circuit low will delay your vw fault. |
00684 Possible Causes:
00684 vw fault code may be caused by one or more of the following:
- Ambient Air Temperature Sensor Circuit Low
- Cylinder 10 Contribution/balance Fault
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
- Crankshaft Position Sensor B Circuit Malfunction
What To Check After Fixing 00684 Code
- Inspect all the connections transmission mount valve 2 (n263), short to ground
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns