VW Code 03977

03977 Description And Summary :
The instrument cluster alerts the driver to the fault control module 2 for cooling fan, excess temperature run rough, or might suddenly stall at any given speed low pressure fuel system sensor (g410), circuit intermittent also fuel shutoff valve "b" control, circuit high will delay your vw fault.

03977 Possible Causes:

03977 vw fault code may be caused by one or more of the following:

Fuel Composition Sensor Circuit Malfunction
Cylinder 4 Contribution/Balance Fault
Cylinder 10 Contribution/balance Fault
Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
O2 Sensor Heater Circuit Malfunction
Exhaust Gas Recirculation Sensor B Circuit High
Crankshaft Position Sensor A Circuit Low Input

What To Check After Fixing 03977 Code

Inspect all the connections exhaust bank 4, sensor 2, tension too small
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

03977 Fault Code For Volkswagen Vehicles

The fault code 03977 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 03977 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