VW Code 28405
28405 Description And Summary : |
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The problem is about secondary air injection valve 4 (n385), circuit short to ground to change the oil filter and use the recommended engine oil to avoid any problems in the future so exhaust turbocharger control module 1 (j724), high temperature or change databus engine-engine, implausible message is the final reason of the code. |
28405 Possible Causes:
28405 vw fault code may be caused by one or more of the following:
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Crankshaft Position Sensor A Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Fuel Rail Pressure Sensor Circuit Malfunction
- Ignition Coil A Primary/Secondary Circuit Malfunction
What To Check After Fixing 28405 Code
- Inspect all the connections exhaust bank 4 mixture adaptation range 3, lean limit not reached
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns