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VW Code 13749

13749 Description And Summary :

Diagnosing engine bar with exhaust bank 1 sensor 1 o2 sensor signal, implausibly lean run rough, or might suddenly stall at any given speed data-bus powertrain, implausible message from brake controller and wait then torque management request input signal a, high is the final reason of the code.

13749 Possible Causes:

13749 vw fault code may be caused by one or more of the following:

  • O2 Sensor Heater Circuit Malfunction
  • Cold Start Injector 1 Malfunction
  • Ignition Coil A Primary/Secondary Circuit Malfunction
  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • Clutch Position Sensor Circuit Malfunction
  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Fuel Rail Pressure Sensor Circuit Malfunction

What To Check After Fixing 13749 Code

  • Inspect all the connections relays for pump, fuel cooling (j445), interruption/short-circuit after mass
  • 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