P0120 Alert on Your 2024 Volvo S60
Your 2024 S60 has flagged P0120 — a throttle position sensor circuit malfunction. The 2024 S60 continues on the SPA platform with mild-hybrid B5 (turbo, 247 hp) or B6 (turbo+supercharged, 295 hp) powertrains. The electronic throttle body integrates the TPS, and on a vehicle under full warranty, this is a straightforward dealer visit.
Symptoms
- Check engine light on
- "Reduced Engine Performance" message
- Power limited — sport sedan feels sluggish
- Throttle unresponsive
- Idle instability
Leading Causes
1. Throttle Body Factory Defect
Manufacturing defect in the electronic throttle body is the primary suspect on a low-mileage 2024 model.
2. ECM Software Update
Pending calibration for the mild-hybrid B5/B6 powertrain released after production.
3. Connector or Wiring Issue
Assembly-related connector or harness problem.
4. Mild-Hybrid ISG Interaction
Communication between the 48V ISG and throttle system producing false P0120.
5. Pedal Sensor Defect
Factory-defective accelerator pedal position sensor.
Diagnostic Steps
- Volvo dealer VIDA scan
- Check for pending software updates
- Inspect connector and wiring
- Monitor live TPS data
- Review ISG communication
Repair Costs
- All repairs under warranty: $0
- Throttle body replacement (out of pocket): $400–$850
Can I Drive With P0120?
Not at highway speeds. Use Volvo On Call for roadside assistance. The S60 should not be driven in traffic with reduced power.
DIY vs Professional
Dealer only. Your 2024 S60 is under Volvo's 4-year/50,000-mile warranty. All throttle system repairs are covered at no cost.
Frequently Asked Questions
Is my 2024 S60 under warranty?
Yes. Volvo's 4-year/50,000-mile warranty covers all throttle components at no cost.
Is the S60 being discontinued?
Volvo has signaled the S60 may be replaced as Volvo shifts to EVs, but the 2024 model is fully supported with warranty and dealer service.
Will I get a loaner car?
Most Volvo dealers provide loaners for warranty repairs. Contact your dealer to arrange one.
Does the mild-hybrid complicate the repair?
The ISG adds diagnostic steps but doesn't change the fundamental throttle body repair. The dealer handles this routinely.