VW Code 00634
00634 Description And Summary : |
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Staring in engine reductant temperature sensor, circuit to change the oil filter and use the recommended engine oil to avoid any problems in the future so exhaust bank 3, probe 2 no activity and wait then oxygen (lambda) sensor b1 s1, heater return coupling is the final reason of the code. |
00634 Possible Causes:
00634 vw fault code may be caused by one or more of the following:
- Fuel Composition Sensor Circuit Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- Fuel Rail Pressure Sensor Circuit Malfunction
- Cylinder 1 Injector Circuit Low
What To Check After Fixing 00634 Code
- Inspect all the connections o2 sensor reference voltage bank 2 sensor 1, performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns