P0120 on Your 2024 Mitsubishi Outlander
Your 2024 Outlander has flagged P0120 — a throttle position sensor circuit malfunction. The 2024 Outlander continues on the Alliance CMF-C/D platform with the 2.5L four-cylinder and CVT. The electronic throttle body integrates the TPS, and on a vehicle under Mitsubishi's generous warranty, the dealer handles this entirely.
Symptoms
- Check engine light on
- Reduced engine power
- Throttle response sluggish
- Rough idle
- S-AWC system may show warnings
Likely Causes
1. Throttle Body Defect
Manufacturing defect in the electronic throttle body on a low-mileage vehicle.
2. ECM Software Update
Pending calibration update for the 2.5L powertrain released after production.
3. Connector Issue
Assembly-related connector seating problem.
4. Wiring Problem
Harness pinch or routing issue from assembly.
5. Pedal Sensor Defect
Factory-defective accelerator pedal sensor.
Diagnostic Steps
- Mitsubishi dealer scan for full diagnostics
- TSB and software update search
- Connector and wiring inspection
- Live TPS data monitoring
- Freeze frame review
Repair Costs
- All repairs under warranty: $0
- Throttle body replacement (out of pocket): $250–$500
Can I Drive With P0120?
Not safely at highway speeds. Have the Outlander towed to a Mitsubishi dealer. The vehicle should not be driven with reduced power, especially with passengers.
DIY vs Professional
Dealer only. The 2024 Outlander is under Mitsubishi's 5-year/60,000-mile basic warranty and 10-year/100,000-mile powertrain warranty. All repairs are at no cost.
Frequently Asked Questions
Is my 2024 Outlander under warranty?
Yes. Mitsubishi's 5-year/60,000-mile basic warranty covers all throttle system components at no cost.
Does Mitsubishi have good warranty coverage?
Excellent. Mitsubishi's 10-year/100,000-mile powertrain warranty is among the longest in the industry, and the 5-year basic warranty exceeds most competitors.
Is the Outlander PHEV affected?
The Outlander PHEV uses a different powertrain (2.4L with electric motors). P0120 can still affect the combustion engine's throttle body, but the electric motor may provide some mobility.
Will the dealer provide a loaner?
Policies vary by dealer. Ask when scheduling your appointment. Many Mitsubishi dealers offer rental car assistance for warranty repairs requiring multiple days.