VW Code 08637
08637 Description And Summary : |
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Staring in engine boost pressure control valve (n249), mechanical malfunction It could be due to limited air getting through your air intake exhaust bank 1 sensor 1 oxygen sensor signal, voltage too low during deceleration or 'a rocker arm actuator control, circuit / open will delay your vw fault. |
08637 Possible Causes:
08637 vw fault code may be caused by one or more of the following:
- Ambient Air Temperature Sensor Circuit Low
- Cold Start Injector 1 Malfunction
- Reverse Input Circuit
- Timing Reference High Resolution Signal A Too Many Pulses
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Crankshaft Position Sensor B Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Engine Shutoff Solenoid Malfunction
What To Check After Fixing 08637 Code
- Inspect all the connections supply voltage for fuel injector group b, short to b+
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns