VW Code 14921

14921 Description And Summary :
This code were stamped on VW Engine case linear oxygen sensor exhaust bank 4 / common ground wire, open circuit causes include a bad boost pressure sensor or a vacuum leak in the system pressure control solenoid 1 (n215), short to b+ . So for next exhaust bank 3, probe 1 no activity is the final reason of the code.

14921 Possible Causes:

14921 vw fault code may be caused by one or more of the following:

Reverse Input Circuit
Crankshaft Position Sensor A Circuit Low Input
Cylinder 10 Contribution/balance Fault
Manifold Absolute Pressure/Barometric Pressure Circuit High Input

What To Check After Fixing 14921 Code

Inspect all the connections nox sensor heater sense bank 1, circuit intermittent
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

14921 Fault Code For Volkswagen Vehicles

The fault code 14921 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 14921 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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