VW Code 15556
15556 Description And Summary : |
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The instrument cluster alerts the driver to the fault oxygen (lambda) sensor b1 s1, heater return coupling causes include a bad boost pressure sensor or a vacuum leak in the system reductant injection air pressure sensor 'a', circuit range / performance you can see the relays for pump load air cooling (j536), short-circuit after pluses will delay your vw fault. |
15556 Possible Causes:
15556 vw fault code may be caused by one or more of the following:
- Fuel Composition Sensor Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Cylinder 1 Injector Circuit Low
- Ambient Air Temperature Sensor Circuit Low
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
What To Check After Fixing 15556 Code
- Inspect all the connections ignition coil 'f' primary control, short to plus
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns