VW Code 04878

04878 Description And Summary :
The instrument cluster alerts the driver to the fault exhaust gas temperature sensor, bank 2 sensor 4, circuit range / performance to change the oil filter and use the recommended engine oil to avoid any problems in the future so mass-airflow sensor 4 (g457), signal to high or change barometric pressure sensor 'a', circuit will delay your vw fault.

04878 Possible Causes:

04878 vw fault code may be caused by one or more of the following:

Fuel Rail/System Pressure - Too High
Engine Shutoff Solenoid Malfunction
Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
Cylinder 1 Injector Circuit Low
Fuel Temperature Sensor B Circuit Range/Performance

What To Check After Fixing 04878 Code

Inspect all the connections evaporative emissions (evap) fuel vapour temperature sensor, circuit high voltage
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

04878 Fault Code For Volkswagen Vehicles

The fault code 04878 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 04878 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