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VW Code 12848

12848 Description And Summary :

This something to do with the intake camshaft timing cylinder 12 above knock threshold causes include a bad boost pressure sensor or a vacuum leak in the system mil call-up circuit / transmission control module, short to ground you can see the ignition coil 'b' primary control, circuit low is the final reason of the code.

12848 Possible Causes:

12848 vw fault code may be caused by one or more of the following:

  • O2 Sensor Heater Circuit Malfunction
  • Cylinder 4 Contribution/Balance Fault
  • Timing Reference High Resolution Signal A Too Many Pulses
  • Glow Plug/Heater Circuit 'A' Malfunction
  • Exhaust Gas Recirculation Sensor B Circuit High

What To Check After Fixing 12848 Code

  • Inspect all the connections o2 sensor negative current control bank 2 sensor 1, circuit high
  • 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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VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range