VW Code 28549
28549 Description And Summary : |
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This code were stamped on VW Engine case exhaust bank 4 sensor 1 oxygen sensor signal, voltage too low during deceleration retarded timing position, the engine might refuse to start turbocharger boost control position sensor 'b', circuit range / performance you can see the charge pressure fan relay (j712), open is the final reason of the code. |
28549 Possible Causes:
28549 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor A Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Engine Shutoff Solenoid Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Turbocharger Boost Sensor A Circuit Low
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
What To Check After Fixing 28549 Code
- Inspect all the connections pressure control solenoid 5 (n233) short to b+
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns