What is fuel trim Bank 2?

What is fuel trim Bank 2?

Diagnostic trouble code (DTC) P0173 stands for “Fuel Trim Bank 2.” This code indicates that your car’s fuel trims have reached their operational limitations (maximum rich or maximum lean). Fuel trim is the ongoing adaptation that the PCM makes to the fuel mixture to maintain a balanced air-fuel ratio.

What is system Too Rich Bank 1?

What Does System Too Rich Bank 1 mean? System too rich bank 1 means that the oxygen sensor in bank 1 identified a rich situation (presence of inadequate amount of oxygen in the exhaust). The engine control unit constantly monitors and communicates with different sensors of the fuel injection system / fuel trim .

What is Bank 1 and Bank 2 on a car?

Bank 1 and bank 2 simply refer to either side of the engine. Check your owner’s manual or a service manual for a positive location of bank 1 and bank 2. Most commonly, bank 1 houses the front most cylinder on the engine cylinder 1, and bank 2 is the opposite side of the engine.

What causes fuel trim issues?

Plugged injectors, fuel filters and weak pumps can cause a lot of fuel trim issues. If the code shows a rich condition, over-fueling could be causing the engine to get more fuel than prescribed. Leaking canister purge valves, lack of maintenance, and contaminated engine oil are all potential issues.

What is Bank 1 in a car?

In the automotive world, Bank 1 refers to the number one cylinder bank, which means it is the bank where the number one cylinder is located. On an inline four-cylinder engine, this is the only cylinder bank.

Why is my engine running Rich?

When a car is running rich, it means the engine is receiving too much fuel and too little air. Your car will still crank and drive if it’s running rich, but you’ll likely experience symptoms like low gas mileage, slow acceleration and strong smell of gasoline (especially when idling).

Is bank 1 upstream or downstream?

upstream sensor
Bank 1 is the side of the engine where cylinder #1 is located. Bank 2 is opposite to Bank 1. Sensor 1 is the upstream sensor. Sensor 2 is the downstream sensor.