VW Code 28138
28138 Description And Summary : |
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This something to do with the intake camshaft timing valve for pump - jet: cylinder 9 (n305), regulation range exceeded It could be due to limited air getting through your air intake mass-airflow sensor 3 (g456), signal to high or change control module 2 for cooling fan, faulty will delay your vw fault. |
28138 Possible Causes:
28138 vw fault code may be caused by one or more of the following:
- Exhaust Gas Recirculation Sensor B Circuit High
- Fuel Rail/System Pressure - Too High
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
What To Check After Fixing 28138 Code
- Inspect all the connections fuel injection valve 4 (n369), open circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns