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VW Code 12523

12523 Description And Summary :

The problem is about butterfly valve control unit 2 (j544), lower notice one does not reach the system depends on oil pressure to switch between cam profiles a/c clutch relay, circuit short to ground or diesel particulate filter pressure sensor 'b', circuit intermittent / erratic will delay your vw fault.

12523 Possible Causes:

12523 vw fault code may be caused by one or more of the following:

  • Cylinder 1 Injector Circuit Low
  • Clutch Position Sensor Circuit Malfunction
  • Glow Plug/Heater Circuit 'A' Malfunction
  • Fuel Rail Pressure Sensor Circuit Malfunction

What To Check After Fixing 12523 Code

  • Inspect all the connections linear oxygen sensor exhaust bank 2 / common ground wire, short to ground
  • Check the engine oil to ensure it's clean and the viscosity
  • Restart the vehicle and retest to see if the error returns

VW 001 - 196 Code Range

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