Investigating P0121 on Your 2022 Lincoln Aviator
A P0121 on your 2022 Lincoln Aviator tells the PCM that the throttle position sensor signal is within voltage range but exhibiting abnormal patterns. Our detective has identified a discrepancy between your pedal commands and what the throttle body reports to the engine computer.
The 2022 Aviator uses a 3.0L twin-turbo V6 with direct injection producing 400 hp (or 494 hp combined in the Grand Touring PHEV variant). Both versions use electronic throttle control with integrated TPS. The twin-turbo DI engine demands precise throttle management for boost control and smooth power delivery.
Symptoms
- Check engine light with possible wrench icon
- Hesitation during acceleration
- Idle roughness
- Turbo response feels muted
- PHEV: hybrid-to-gas transitions may feel rough
Causes Ranked
- Carbon buildup on throttle body – The 3.0L twin-turbo DI engine deposits carbon on the throttle plate. At 2–4 years old, this is the primary suspect. Likelihood: 45%
- Throttle body assembly wear – Internal TPS or motor component degradation. Likelihood: 25%
- PCM software update – Ford has released throttle and boost recalibrations for the Aviator platform. Likelihood: 15%
- Wiring or connector issue – Twin-turbo engine bay heat degrades connectors. Likelihood: 10%
- Boost system leak – Intercooler or charge pipe leak affecting throttle body pressure. Likelihood: 5%
Repair Costs
- Throttle body cleaning: $120–$200 (shop) / $10–$25 (DIY)
- Throttle body replacement: $400–$700 parts and labor
- PCM update: $100–$200 (dealer)
- Wiring repair: $100–$300
Warranty
Your 2022 Aviator should be within Lincoln's 4-year/50,000-mile comprehensive warranty depending on mileage. The 6-year/70,000-mile powertrain warranty should apply. Lincoln offers complimentary pickup and delivery for warranty service. If out of basic warranty, throttle body cleaning is moderate difficulty on the 3.0L twin-turbo.
How AutoDetective AI Can Help
AutoDetective's AI differentiates between the Aviator's standard and PHEV powertrains to rank causes specific to your configuration. Upload your scan data for a free diagnosis.