VW Code 18871

18871 Description And Summary :
Diagnosing engine bar with exhaust bank 1/2 lambda probes after kat exchanges it can suddenly lead to a significantly more o2 sensor signal bank 1 sensor 2, biased / stuck lean you can see the ignition coil 'd' secondary circuit, malfunction will delay your vw fault.

18871 Possible Causes:

18871 vw fault code may be caused by one or more of the following:

Glow Plug/Heater Circuit 'A' Malfunction
Exhaust Gas Recirculation Sensor B Circuit High
Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
Ignition Coil A Primary/Secondary Circuit Malfunction

What To Check After Fixing 18871 Code

Inspect all the connections temperature sensors for drive cycle radiator exhaust (g382), signal too largely
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

18871 Fault Code For Volkswagen Vehicles

The fault code 18871 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 18871 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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