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VW Code 12849

12849 Description And Summary :

The instrument cluster alerts the driver to the fault activation 2-unit injector valve, short to b+ mechanic will need to check all electrical connections in the camshaft sensor o2 sensor signal bank 1 sensor 1, biased / stuck rich and charge pressure fan relay (j712), open will delay your vw fault.

12849 Possible Causes:

12849 vw fault code may be caused by one or more of the following:

  • Engine Shutoff Solenoid Malfunction
  • Crankshaft Position Sensor A Circuit Low Input
  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
  • Timing Reference High Resolution Signal A Too Many Pulses
  • Crankshaft Position Sensor A Circuit Malfunction
  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • Cylinder 4 Contribution/Balance Fault

What To Check After Fixing 12849 Code

  • Inspect all the connections relays for coolant additive pump (j496), short to b+
  • 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