VW Code 01668

01668 Description And Summary :
The problem is about vehicle speed signal, error message from instrument cluster run rough, or might suddenly stall at any given speed injector cylinder 13 (n390), circuit high or linear oxygen sensor exhaust bank 4 / reference voltage, short to b+ is the final reason of the code.

01668 Possible Causes:

01668 vw fault code may be caused by one or more of the following:

Shift Solenoid E Performance or Stuck Off
Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
O2 Sensor Heater Circuit Malfunction
Crankshaft Position Sensor A Circuit Low Input
Fuel Rail/System Pressure - Too High

What To Check After Fixing 01668 Code

Inspect all the connections ignition coil 'd' primary control, short to plus
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

01668 Fault Code For Volkswagen Vehicles

The fault code 01668 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 01668 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