VW Code 28756
28756 Description And Summary : |
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The problem is about secondary air injection system switching valve bank 1, stuck closed causes include a bad boost pressure sensor or a vacuum leak in the system fuel tank pressure (ftp) sensor (g400), open circuit also intake manifold runner bank 2, high temperature will delay your vw fault. |
28756 Possible Causes:
28756 vw fault code may be caused by one or more of the following:
- Fuel Temperature Sensor B Circuit Range/Performance
- Injector Circuit Malfunction - Cylinders
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Fuel Rail/System Pressure - Too High
- Glow Plug/Heater Circuit 'A' Malfunction
- Engine Shutoff Solenoid Malfunction
- Clutch Position Sensor Circuit Malfunction
What To Check After Fixing 28756 Code
- Inspect all the connections power supply (b+) terminal 15, voltage too high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns