What P0121 Tells You About Your 2022 Volvo S60
A P0121 on your 2022 Volvo S60 means the ECM has flagged an abnormal throttle position sensor signal. The readings are within voltage specs but the pattern doesn't track your pedal inputs—our detective has found a throttle body communication issue worth investigating.
The 2022 S60 uses Volvo's SPA platform with the 2.0L Drive-E in B5 (turbo, 247 hp) or T8 Recharge (turbo + supercharger + electric, 455 hp combined). The Polestar Engineered variant pushes the T8 to even higher performance. All use direct injection.
Symptoms
- Check engine light on
- Hesitation during spirited acceleration
- Idle roughness
- Turbo/supercharger transitions feel rough
- T8/Polestar: hybrid transitions inconsistent
Causes Ranked
- Carbon buildup on throttle body – DI engine carbon accumulation. Likelihood: 45%
- Throttle body assembly wear – Internal TPS or motor degradation. Likelihood: 25%
- ECM software update – VIDA calibration refinement. Likelihood: 15%
- Wiring or connector issue – Heat-related degradation. Likelihood: 10%
- Boost system issue – Supercharger clutch or wastegate (T8). Likelihood: 5%
Repair Costs
- Throttle body cleaning: $120–$200 (shop) / $10–$25 (DIY)
- Throttle body replacement: $400–$700 parts and labor
- VIDA software update: $100–$250 (dealer)
- Wiring repair: $100–$300
Warranty
Your 2022 S60 may still be within Volvo's 4-year/50,000-mile warranty depending on mileage. Volvo dealers use VIDA for complete diagnostics and software updates. If out of warranty, a VIDA-equipped independent Volvo specialist is a cost-effective alternative.
How AutoDetective AI Can Help
AutoDetective's AI analyzes your S60's specific powertrain (B5 or T8) for a tailored diagnosis. Upload your scan data for free.