P0120 on Your 2024 Genesis G70
Your 2024 G70 has flagged P0120 — a throttle position sensor circuit malfunction. The 2024 G70 continues with the 2.0T four-cylinder (252 hp) or 3.3T twin-turbo V6 (365 hp), both using electronic throttle bodies with integrated TPS. On a vehicle under Genesis's industry-leading warranty, this is handled entirely by the dealer.
Symptoms
- Check engine light on
- Power reduced — limp mode
- Throttle response dead or laggy
- Sport features disabled
- Idle instability
Probable Causes
1. Throttle Body Defect
Manufacturing defect in the electronic throttle body — the primary suspect on a low-mileage vehicle.
2. ECU Software Calibration
Pending powertrain calibration update released after production.
3. Connector or Wiring
Assembly-related connector or harness issue.
4. Turbo System Interaction
Boost control and throttle body communication issue (especially on the 3.3T).
5. Pedal Sensor Defect
Factory-defective accelerator pedal position sensor.
Diagnostic Steps
- Genesis dealer scans with GDS
- Check for TSBs and software updates
- Inspect connector and wiring
- Monitor live TPS and APP data
- Review freeze frame data
Repair Costs
- All repairs under warranty: $0
- Throttle body replacement (out of pocket): $350–$700
Can I Drive With P0120?
Not safely at performance levels. Use Genesis Concierge — they'll pick up your car and deliver a loaner. This is the luxury ownership experience Genesis promises.
DIY vs Professional
Dealer only. Your 2024 G70 is under Genesis's 5-year/60,000-mile basic warranty and 10-year/100,000-mile powertrain warranty. All repairs covered at no cost. Genesis Concierge handles logistics.
Frequently Asked Questions
Will Genesis pick up my car?
Yes. Genesis Concierge provides complimentary valet service for warranty repairs — they come to you with a loaner and take your G70 to the dealer.
Is my 2024 G70 fully covered?
Yes. Genesis's 5-year/60,000-mile basic warranty is among the most generous in the luxury segment. Throttle body repairs are covered at no cost.
Is the 2024 G70 the last model year?
The G70's future is uncertain as Genesis transitions toward EVs, but the 2024 model is fully supported with warranty, parts, and dealer service.
Does this affect the G70's reliability?
One P0120 code does not indicate a reliability problem. Electronic component defects occasionally occur. Genesis's strong warranty coverage mitigates any concern.