Learn about OBD-II codes P0172 and P0175, their causes, symptoms like check engine light and misfiring, and diagnostic tips for rich fuel mixtures at RepairPal.

May 10, 2010 · P0172 is :system too rich (bank 1). This is usually caused by a restricted/clogged air intake filter. Manifold absolute pressure sensor, throttle position sensor, engine coolant …

Dec 13, 2010 · Lexus IS250 Check Engine Light With Code P0172 and/or P0175 - 1 reports. Learn about this problem, why it occurs, and how to fix it.

Understand the P0171 OBD-II code: Fuel System Too Lean (Bank 1). Learn about symptoms, common causes like vacuum leaks, and troubleshooting steps at RepairPal.

Other codes may be triggered by the Mass Air Flow Sensor problem such as Oxygen Sensor and/or Fuel Trim Lean/Rich codes (P0130/P0136, P0131/P0137, P0132/P0138, …

Learn about P0174 symptoms, causes, and potential solutions from the diagnostic experts at RepairPal.

Jul 23, 2024 · Recently bought a 2014 bmw x3 28i that is throwing the p0171 and p0172 in bank 1. Has a lack of power and noticeable exhaust residue. Have checked ...

May 27, 2014 · Learn about P0172 & P0175 codes in your 2003 Toyota Highlander after changing the Mass Air Flow sensor. Discover causes, solutions, and maintenance tips.

Learn about the P0173 OBD-II code, its symptoms, and common causes like vacuum leaks. Get expert diagnostic tips for fixing fuel trim issues on RepairPal.

Sometimes the Air Flow Sensor and the sensing wire get covered with dirt, dust, or oil residue, which can set a P0171 or P0172 in addition to the P0104 code. Cleaning the sensor might …