HOW TO FIX P02B7 OBD II ERROR CODE - Cylinder Eight Fuel Trim Minimum Limit Diagnosed

Description:
If your engine is sputtering and smells strongly of raw fuel, a P02B7 code usually indicates that cylinder eight is running rich despite the computer's best efforts to trim back the fuel supply. This means the fuel trim is at its minimum limit, yet the cylinder is still flooding. In this video, we focus on identifying the root cause of this specific cylinder issue. The most likely culprit is a leaking or stuck open fuel injector that is dumping gas when it should be closed. We show you how to use a mechanic's stethoscope or a long screwdriver to listen to the injector firing pattern to hear if it sounds different from the others. We also cover checking the fuel pressure regulator for ruptured diaphragms that suck gas into the vacuum lines and inspecting the spark plug and coil on cylinder eight to ensure you are not dealing with a simple ignition failure mimicking a rich condition.

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