P0175 on a Ford: Causes, Fixes & Repair Cost

🟠 Moderate severity · drivable

Drivable for a short time, but a rich mixture wastes fuel and can damage the catalytic converter, so fix it soon.

What P0175 means on a Ford

On a Ford, P0175 means bank 2 is running rich — too much fuel or not enough air. It affects V6 and V8 Fords, not four-cylinder models. A contaminated mass air flow sensor or a faulty oxygen sensor is the most common cause.

Is P0175 common on Fords?

P0175 appears on Fords like the F-150, Mustang, Explorer, and Edge. Ford's mass air flow sensor can get coated with dirt and oil from the air filter, which makes the computer add too much fuel. Bank 2 oxygen sensors also wear out with mileage.

Commonly reported on: F-150, Mustang, Explorer, Edge.

Symptoms

Check engine light is on
Poor fuel economy
Strong fuel smell
Rough idle

Common causes

most common: Contaminated mass air flow sensor
common: Faulty bank 2 oxygen sensor
common: Exhaust leak ahead of the bank 2 sensor
less common: Leaking fuel injector on bank 2

How to fix it

Fix	DIY?	Typical cost
Clean or replace the mass air flow sensor	Yes	$10–250
Replace the bank 2 oxygen sensor	Yes	$60–200
Repair the exhaust leak ahead of the sensor	Mechanic	$100–300