VW Code 16638
16638 Description And Summary : |
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Diameter in engine ignition coil 'b' primary control, circuit low causes include a bad boost pressure sensor or a vacuum leak in the system b camshaft position actuator control bank 2, circuit low you can see the throttle control: airflow at idle too low will delay your vw fault. |
16638 Possible Causes:
16638 vw fault code may be caused by one or more of the following:
- Glow Plug/Heater Circuit 'A' Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Cylinder 4 Contribution/Balance Fault
- Crankshaft Position Sensor A Circuit Low Input
- Cold Start Injector 1 Malfunction
- Cylinder 1 Injector Circuit Low
- Shift Solenoid E Performance or Stuck Off
What To Check After Fixing 16638 Code
- Inspect all the connections data bus powertrain, implausible message of the airbag control module
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns