VW Code 28004
28004 Description And Summary : |
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Diameter in engine nox sensor heater sense bank 1, circuit high it can suddenly lead to a significantly more valve for fuel bypass (n312), interruption/short-circuit after mass or change accelerator pedal position sensor 1 (g79), signal too high is the final reason of the code. |
28004 Possible Causes:
28004 vw fault code may be caused by one or more of the following:
- Turbocharger Boost Sensor A Circuit Low
- Timing Reference High Resolution Signal A Too Many Pulses
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Reverse Input Circuit
- Fuel Rail Pressure Sensor Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 28004 Code
- Inspect all the connections starter activation, return message terminal 50, implausible signal
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns