Ford Error Code P1120: How to Fix It

Q: Can I drive with Ford error code P1120?

You should avoid driving with P1120 as it can cause unpredictable throttle response, stalling, and reduced power. The vehicle may enter limp mode to protect the engine, limiting your speed and performance.

Q: How much does it cost to fix Ford P1120 error?

A throttle position sensor typically costs $30-80, and professional labor can add $100-150. If you do it yourself, expect to spend $30-80 plus your time.

Q: What causes throttle position sensor to fail?

Common causes include normal wear over time, contamination from oil or carbon buildup, electrical connection corrosion, and damage from engine bay heat. Most TPS failures occur gradually over many miles.

Q: How long does a throttle position sensor last?

Most throttle position sensors last 100,000-150,000 miles under normal driving conditions. Severe driving conditions or poor maintenance can reduce this lifespan.

Q: Will P1120 clear itself?

No, P1120 will not clear itself. The code will remain active until the underlying problem is fixed and the code is manually cleared with an OBD2 scanner or by disconnecting the battery.

Abstract

Ford error code P1120 indicates your throttle position sensor is reading below the expected range, causing poor engine performance and potential stalling. This sensor tells your engine computer how much throttle you're applying, and when it fails, your vehicle may experience rough idling, reduced power, or even enter limp mode.