P0122 on Your 2022 Honda Accord: Circuit Fault Detected
When your 2022 Honda Accord triggers P0122, the ECM has detected that the throttle position sensor voltage has fallen below the minimum threshold. This is a circuit failure—not just noise or drift in the signal, but a breakdown in the electrical path. Our detective has found that the TPS communication has essentially gone offline.
The 2022 Accord (10th generation, final year) uses a 1.5L VTEC turbo (192 hp) or 2.0L VTEC turbo (252 hp). Both engines have electronic throttle control with integrated dual TPS signals.
Symptoms
- Check engine light on
- Severe throttle response loss
- Engine may not respond to gas pedal
- Limp mode with limited speed
- Engine may stall
Electrical Causes
- Throttle body connector corrosion – Pin oxidation or looseness at 2–4 years old. Likelihood: 35%
- Throttle body TPS failure – Internal sensor short or open circuit. Likelihood: 30%
- Wiring damage – Chafed or damaged wire in the TPS circuit. Likelihood: 20%
- 5V reference circuit issue – Shared reference pulled low. Likelihood: 10%
- Moisture intrusion – Water in the connector from washing or road spray. Likelihood: 5%
Repair Costs
- Connector repair: $50–$150
- Throttle body replacement: $300–$550 parts and labor
- Wiring repair: $150–$350
Warranty Check
Your 2022 Accord may still be within Honda's 3-year/36,000-mile basic warranty. The 5-year/60,000-mile powertrain warranty should apply. P0122 is urgent—contact your dealer immediately. If out of basic warranty, the powertrain warranty likely covers this. The dealer uses HDS for complete TPS circuit diagnosis.
How AutoDetective AI Can Help
AutoDetective's AI analyzes P0122 circuit faults differently from P0121 performance issues. Upload your data for a free targeted diagnosis.