VW Code 18520
18520 Description And Summary : |
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Staring in engine fuel pressure regulator 2 control circuit high the system depends on oil pressure to switch between cam profiles charge pressure fan relay (j712), short to b+ . So for next ecm/pcm power input, signal intermittent will delay your vw fault. |
18520 Possible Causes:
18520 vw fault code may be caused by one or more of the following:
- Engine Oil Temperature Sensor Malfunction
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- Cylinder 1 Injector Circuit Low
- Fuel Rail/System Pressure - Too High
- Shift Solenoid E Performance or Stuck Off
- Ambient Air Temperature Sensor Circuit Low
- Cold Start Injector 1 Malfunction
What To Check After Fixing 18520 Code
- Inspect all the connections reductant injection air pressure sensor 'a', circuit intermittent
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns