Jan 10, 2025 · Learn what's causing your engine to run too lean and triggering the P0171 code, and how to fix it before it leads to costly repairs.

Mar 17, 2023 · What does the P0171 code mean? The P0171 code indicates that the oxygen (O2) sensor on bank 1 sent a signal to the engine control module that the air-fuel mixture is …

Aug 19, 2024 · The P0171 code means that more air than gasoline is detected in the exhaust gases exiting the combustion chamber. If the P0171 is set in along with the P0174 code, it is …

Jan 10, 2025 · With less fuel delivered than required, the engine runs on a lean air-fuel mixture, which commonly triggers code P0171. Fix: Try using a fuel injector cleaner as a first step.

Diagnostic trouble code (DTC) P0171 stands for “System Too Lean” (Bank 1). The air-fuel mixture with too much air and little gasoline could trigger this trouble code. Lean Mixture = Too much …

When your powertrain/engine control module receives a reading that indicates there’s too much oxygen and the ratio is incorrect, it sends an error code P0171 or P0174. Depending on the …

Aug 20, 2023 · Check Fuel Pressure: Ensure fuel pressure is within specifications. Low fuel pressure can cause a lean condition. Inspect MAF Sensor: Verify the operation of the MAF …

Apr 11, 2025 · When your check engine light illuminates and an OBD-II scan reveals Code P0171, you’re facing one of the most common yet potentially serious diagnostic trouble codes …

Struggling with the P0171 code? Explore its causes, symptoms, and effective repair solutions to ensure your vehicle's air-fuel mixture is balanced and efficient.

Jul 15, 2024 · Check out the FIXD article on the most common causes of check engine lights. Here’s an overview of the parts and systems that can cause a P0171 code and their average …