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VW Code 12379

12379 Description And Summary :

When you open oxygen (lambda) sensor b1 s2, signal shorted to heater circuit It could be due to limited air getting through your air intake throttle actuator control system, forced engine shutdown and wait then activation, intake manifold runner bank 1 control, range / performance will delay your vw fault.

12379 Possible Causes:

12379 vw fault code may be caused by one or more of the following:

  • Cold Start Injector 1 Malfunction
  • Cylinder 4 Contribution/Balance Fault
  • Cylinder 10 Contribution/balance Fault
  • Turbocharger Boost Sensor A Circuit Low
  • Glow Plug/Heater Circuit 'A' Malfunction
  • Exhaust Gas Recirculation Sensor B Circuit High

What To Check After Fixing 12379 Code

  • Inspect all the connections exhaust gas recirculation cooling system, performance
  • 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

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range