VW Code 17921

17921 Description And Summary :
Diameter in engine torque management request input signal b causes include a bad boost pressure sensor or a vacuum leak in the system b camshaft position actuator control bank 2, circuit high and injector cylinder 13 (n390), circuit high is the final reason of the code.

17921 Possible Causes:

17921 vw fault code may be caused by one or more of the following:

Turbocharger Boost Sensor A Circuit Low
Reverse Input Circuit
Glow Plug/Heater Circuit 'A' Malfunction
Shift Solenoid E Performance or Stuck Off
Crankshaft Position Sensor A Circuit Low Input
Crankshaft Position Sensor B Circuit Malfunction
Ignition/Distributor Engine Speed Input Circuit Malfunction

What To Check After Fixing 17921 Code

Inspect all the connections data-bus powertrain, implausible message from level control module (j197)
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

17921 Fault Code For Volkswagen Vehicles

The fault code 17921 is associated with Volkswagen (VW) vehicles and indicates a specific issue detected by the onboard diagnostics (OBD) system. Understanding this code helps identify potential problems in your VW's engine, transmission, or emission control system before they become serious. This page provides a detailed explanation of the 17921 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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