VW Code 28891

28891 Description And Summary :
The instrument cluster alerts the driver to the fault relays for coolant additive pump (j496), short to ground causes include a bad boost pressure sensor or a vacuum leak in the system power supply (b+) terminal 15, implausible or starter does not run, mechanically blocked or mechanical malfunction is the final reason of the code.

28891 Possible Causes:

28891 vw fault code may be caused by one or more of the following:

Cylinder 10 Contribution/balance Fault
Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
Fuel Temperature Sensor B Circuit Range/Performance
Ambient Air Temperature Sensor Circuit Low
Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
Engine Shutoff Solenoid Malfunction
Manifold Absolute Pressure/Barometric Pressure Circuit High Input

What To Check After Fixing 28891 Code

Inspect all the connections engine coolant temperature sensor 2 (g83), circuit low
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

28891 Fault Code For Volkswagen Vehicles

The fault code 28891 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 28891 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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