VW Code 12155

12155 Description And Summary :
This code were stamped on VW Engine case valve for coolant system circuit, low / intermittent It could be due to limited air getting through your air intake torque management feedback signal "b" . So for next exhaust gas temperature sensor 2 bank 2 (g449), high is the final reason of the code.

12155 Possible Causes:

12155 vw fault code may be caused by one or more of the following:

Engine Shutoff Solenoid Malfunction
Cold Start Injector 1 Malfunction
Ignition Coil A Primary/Secondary Circuit Malfunction
Cylinder 10 Contribution/balance Fault
Crankshaft Position Sensor A Circuit Malfunction
Injector Circuit Malfunction - Cylinders
Fuel Rail Pressure Sensor Circuit Malfunction

What To Check After Fixing 12155 Code

Inspect all the connections control module for coolant fan 3 fan activation, short circuit
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

12155 Fault Code For Volkswagen Vehicles

The fault code 12155 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 12155 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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