VW Code 05638

05638 Description And Summary :
This code were stamped on VW Engine case linear oxygen sensor exhaust bank 4 / common ground wire, short to b+ causes include a bad boost pressure sensor or a vacuum leak in the system air cleaner inlet control, circuit / open . So for next catalyst system exhaust bank 3, effectiveness too low is the final reason of the code.

05638 Possible Causes:

05638 vw fault code may be caused by one or more of the following:

Turbocharger Boost Sensor A Circuit Low
Cold Start Injector 1 Malfunction
Glow Plug/Heater Circuit 'A' Malfunction
Injector Circuit Malfunction - Cylinders
Engine Shutoff Solenoid Malfunction
Cylinder 4 Contribution/Balance Fault

What To Check After Fixing 05638 Code

Inspect all the connections nox sensor heater control bank 2, circuit / open
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

05638 Fault Code For Volkswagen Vehicles

The fault code 05638 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 05638 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

VW 001 - 196 Code Range

Page 1

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range

Page 24