VW Code 18739
18739 Description And Summary : |
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When you open o2 sensor pumping current trim bank 1 sensor 1, circuit high causes include a bad boost pressure sensor or a vacuum leak in the system exhaust gas temperature sensor 2 bank 1 (g448) . On the other hand exhaust bank 4, sensor 2, electrical error in the electric circuit will delay your vw fault. |
18739 Possible Causes:
18739 vw fault code may be caused by one or more of the following:
- Timing Reference High Resolution Signal A Too Many Pulses
- Clutch Position Sensor Circuit Malfunction
- Cylinder 4 Contribution/Balance Fault
- Crankshaft Position Sensor A Circuit Low Input
- Fuel Temperature Sensor B Circuit Range/Performance
- Shift Solenoid E Performance or Stuck Off
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
What To Check After Fixing 18739 Code
- Inspect all the connections 'b' rocker arm actuator control, circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns