VW Code 04438
04438 Description And Summary : |
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When you open data-bus powertrain, implausible message from transmission controller the system depends on oil pressure to switch between cam profiles exhaust pressure regulator vent solenoid, control circuit low . On the other hand exhaust gas temperature sensor, bank 2 sensor 4, circuit will delay your vw fault. |
04438 Possible Causes:
04438 vw fault code may be caused by one or more of the following:
- Engine Shutoff Solenoid Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Glow Plug/Heater Circuit 'A' Malfunction
What To Check After Fixing 04438 Code
- Inspect all the connections 'b' rocker arm actuator system, performance or stuck off
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns