Mar 1, 2025 · Discover the underlying causes of the P0172 code, from faulty oxygen sensors to clogged fuel injectors, and learn how to fix the rich fuel trim system.

The P0172 code means that more gasoline is detected in the exhaust gases exiting the combustion chamber. If the P0172 is set in along with the P0175 code, it is highly likely that the problem is …

1 day ago · The P0172 code indicates a problem with the vehicle’s air-fuel mixture, signaling that the engine is operating with excessive fuel. Addressing this code prevents long-term damage to …

P0172 is a code that means there's too much fuel in the air/fuel mixture. Learn common causes and solutions.

Jun 25, 2023 · The P0172 code indicates that the powertrain control module (PCM) has detected a rich air-fuel mixture in the engine's bank 1. The rich mixture means that there is more fuel than needed …

Mar 29, 2025 · The usual culprit for the code P0172 is the fuel system. The identifying symptoms of this problem are rough idling, low performance, and a drop in fuel economy.

This guide explains the P0172 code’s meaning, symptoms, causes, and step-by-step diagnostics to fix it like a pro—potentially saving you $400-$800 from overpriced fuel system repairs.

Aug 11, 2025 · When the check engine light comes on with a P0172 code, it means the ECM (engine control module) has detected that the air-fuel mixture is too rich on Bank 1, the side of the engine …

4 days ago · In this comprehensive guide, I will explain what the P0172 code is, including signs, causes, fixes, and some general cost estimates. What Does The P0172 Engine Code Mean? The P0172 …

Learn what a P0172 code means, what the symptoms are and the most common causes. Then follow the diagnostic steps listed here.