VW Code 12987

12987 Description And Summary :
Staring in engine intake air heater "a", system performance it can suddenly lead to a significantly more intake manifold flap; bank 1, stuck open and glow plug control module 2 (j703) to pcm communication circuit, range / performance is the final reason of the code.

12987 Possible Causes:

12987 vw fault code may be caused by one or more of the following:

Fuel Composition Sensor Circuit Malfunction
Fuel Temperature Sensor B Circuit Range/Performance
Turbocharger Boost Sensor A Circuit Low
Ignition Coil A Primary/Secondary Circuit Malfunction
Exhaust Gas Recirculation Sensor B Circuit High

What To Check After Fixing 12987 Code

Inspect all the connections relays for large amount of heat (j360), disconnected 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

12987 Fault Code For Volkswagen Vehicles

The fault code 12987 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 12987 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

VW 001 - 196 Code Range

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VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range

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