VW Code 18668

18668 Description And Summary :
Staring in engine secondary air injection system switching valve bank 2, stuck closed to change the oil filter and use the recommended engine oil to avoid any problems in the future so secondary air injection valve 3 (n384), circuit short to ground and bank 2, system too lean off idle will delay your vw fault.

18668 Possible Causes:

18668 vw fault code may be caused by one or more of the following:

O2 Sensor Heater Circuit Malfunction
Engine Shutoff Solenoid Malfunction
Cylinder 1 Injector Circuit Low
Crankshaft Position Sensor B Circuit Malfunction
Fuel Rail Pressure Sensor Circuit Malfunction

What To Check After Fixing 18668 Code

Inspect all the connections ignition coil 'd' secondary circuit, malfunction
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

18668 Fault Code For Volkswagen Vehicles

The fault code 18668 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 18668 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