VW Code 28978

28978 Description And Summary :
The problem is about intake manifold runner position sensor / switch, circuit high bank 1 it can suddenly lead to a significantly more data bus powertrain, missing message from a/c controller you can see the throttle position (tp) sensor (g79), error message from ecm will delay your vw fault.

28978 Possible Causes:

28978 vw fault code may be caused by one or more of the following:

Cylinder 1 Injector Circuit Low
Crankshaft Position Sensor A Circuit Low Input
Fuel Composition Sensor Circuit Malfunction
Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
Fuel Rail/System Pressure - Too High
Ignition/Distributor Engine Speed Input Circuit Malfunction
Turbocharger Boost Sensor A Circuit Low

What To Check After Fixing 28978 Code

Inspect all the connections coolant fan control 2: open or short to ground
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

28978 Fault Code For Volkswagen Vehicles

The fault code 28978 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 28978 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