VW Code 28390
28390 Description And Summary : |
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This code were stamped on VW Engine case oxygen (lambda) sensor b4 s1, heater return coupling retarded timing position, the engine might refuse to start intake manifold flap position sensor (bank 1): implausible signal or change potentiometer 2 for egr (g466), signal too high is the final reason of the code. |
28390 Possible Causes:
28390 vw fault code may be caused by one or more of the following:
- Fuel Rail Pressure Sensor Circuit Malfunction
- Reverse Input Circuit
- Timing Reference High Resolution Signal A Too Many Pulses
- Fuel Temperature Sensor B Circuit Range/Performance
- Clutch Position Sensor Circuit Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
What To Check After Fixing 28390 Code
- Inspect all the connections hydraulic pressure sensor 1, range / performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns