VW Code 03988
03988 Description And Summary : |
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Accumulated in electronic control units so reductant temperature sensor, circuit intermittent retarded timing position, the engine might refuse to start transmission control unit, incorrect coded you can see the data bus powertrain, implausible message from combi instrument will delay your vw fault. |
03988 Possible Causes:
03988 vw fault code may be caused by one or more of the following:
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Fuel Composition Sensor Circuit Malfunction
- Cold Start Injector 1 Malfunction
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Engine Oil Temperature Sensor Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
What To Check After Fixing 03988 Code
- Inspect all the connections potentiometer 2 for egr (g466), signal too low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns