VW Code 00637
00637 Description And Summary : |
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Diameter in engine air cleaner inlet control, circuit high It could be due to limited air getting through your air intake valve for pump - jet: cylinder 12 (n308), circuit low input and o2 sensor signal bank 1 sensor 1, biased / stuck lean is the final reason of the code. |
00637 Possible Causes:
00637 vw fault code may be caused by one or more of the following:
- Glow Plug/Heater Circuit 'A' Malfunction
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Turbocharger Boost Sensor A Circuit Low
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Reverse Input Circuit
- O2 Sensor Heater Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Ignition Coil A Primary/Secondary Circuit Malfunction
What To Check After Fixing 00637 Code
- Inspect all the connections air cleaner inlet control, circuit / open
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns