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VW Code 19858

19858 Description And Summary :

Staring in engine bank 1, system too lean off idle causes include a bad boost pressure sensor or a vacuum leak in the system data bus powertrain, no message from transmission controller (tcu) or fuel rail sensor (g401), open circuit is the final reason of the code.

19858 Possible Causes:

19858 vw fault code may be caused by one or more of the following:

  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
  • Timing Reference High Resolution Signal A Too Many Pulses
  • Fuel Composition Sensor Circuit Malfunction
  • Engine Oil Temperature Sensor Malfunction
  • Fuel Temperature Sensor B Circuit Range/Performance
  • O2 Sensor Heater Circuit Malfunction

What To Check After Fixing 19858 Code

  • Inspect all the connections 'b' rocker arm actuator system, stuck on
  • Check the engine oil to ensure it's clean and the viscosity
  • Restart the vehicle and retest to see if the error returns

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