Tracking P0120 on Your 2022 Mitsubishi Outlander
When your 2022 Outlander's check engine light comes on and the engine feels underpowered, the trail of evidence points to P0120 — a throttle position sensor circuit malfunction. The completely redesigned 2022 Outlander sits on the Nissan-Renault-Mitsubishi Alliance CMF-C/D platform (shared with the Nissan Rogue), powered by a 2.5L four-cylinder engine. The electronic throttle body integrates the TPS, and when voltage signals stray outside the ECU's expected range, the system limits power output.
Symptoms
- Check engine light illuminated
- Reduced engine power — vehicle feels sluggish
- Throttle response delayed or erratic
- Rough or unstable idle
- Possible stalling at stops
- S-AWC (Super All-Wheel Control) may show warnings
Common Causes
1. Electronic Throttle Body Failure
The electronic throttle body on the 2.5L engine can develop internal TPS wear or motor issues. As a redesigned platform, early-production throttle body components may have tighter tolerances that show issues sooner.
2. Carbon Buildup
The 2.5L port-injected engine produces crankcase vapors, though less than direct-injection engines. At typical 2022 mileage, moderate carbon accumulation on the throttle bore can still affect TPS readings.
3. Connector or Wiring Issue
Engine bay heat and vibration can degrade the throttle body connector. The Outlander's engine bay is relatively compact for a three-row SUV, packing components tightly.
4. ECM Software Update
As a first-year redesign sharing Nissan platform technology, the 2022 Outlander has received multiple ECM updates since launch. A pending throttle calibration may resolve P0120.
5. Accelerator Pedal Sensor
The dual APP sensor pedal can develop wear or resistance changes that produce conflicting signals triggering a TPS circuit code.
Diagnostic Steps
- Scan with OBD-II scanner for codes and freeze frame data
- Inspect throttle body connector for corrosion or damage
- Check throttle bore for carbon deposits
- Monitor live TPS voltage during controlled throttle sweep
- Check for Mitsubishi TSBs on 2022 Outlander throttle system
Cost Breakdown
- Throttle body replacement: $250–$500
- Throttle body cleaning: $125–$275
- Wiring repair: $100–$300
- ECM software update: $100–$200
- Pedal sensor replacement: $125–$300
Can I Drive With P0120?
Only at low speed to a shop. The Outlander with reduced power is not safe for highway driving, especially loaded with passengers. Your 2022 Outlander should be within Mitsubishi's 5-year/60,000-mile basic warranty — one of the more generous in the industry.
DIY vs Professional
Check your Mitsubishi warranty — the 5-year/60,000-mile basic coverage should apply to your 2022 model. The 10-year/100,000-mile powertrain warranty provides additional protection. Out of warranty, throttle body replacement on the 2.5L is straightforward and accessible. A basic OBD-II scanner can handle the relearn procedure.
Frequently Asked Questions
Is the 2022 Outlander a redesigned model?
Yes. The 2022 Outlander was a complete redesign on the Nissan-Renault-Mitsubishi Alliance platform, with a new 2.5L engine and CVT transmission. It shares underpinnings with the Nissan Rogue.
What is Mitsubishi's warranty coverage?
Mitsubishi provides a 5-year/60,000-mile basic warranty and 10-year/100,000-mile powertrain warranty — among the best in the mainstream market. Throttle body repairs fall under the basic warranty.
Does the Outlander share parts with the Nissan Rogue?
The 2022 Outlander shares its platform with the Rogue, but uses a different 2.5L engine (not the Rogue's 1.5T). The throttle body may differ between the two vehicles.
Is P0120 expensive to fix on an Outlander?
Mitsubishi parts and labor are generally more affordable than luxury brands. Throttle body replacement runs $250–$500 total. Under warranty, it's free.