All codes › P0123
P0123: Throttle/Pedal Position Sensor "A" Circuit High
What it means
Throttle position sensor "A" voltage is too high.
Severity: High Erratic throttle response; get it checked soon.
Common causes
- Signal shorted to voltage
- Failed TPS
- Open sensor ground
- Damaged connector
Most common causes first. Exact causes vary by make, model and engine.
Can I fix it myself?
Sometimes DIY. Look for a chafed signal wire shorted to voltage.
Repair cost
SEEDED ESTIMATE Roughly $190–$580
Most likely repair: throttle body (includes tps on most drive-by-wire cars). Diagnosis fees, taxes and other causes are not included.
| Line | Low | High | Basis |
|---|---|---|---|
| Throttle body (includes TPS on most drive-by-wire cars) | $140 | $344 | Typical listed retail range, source ($870–$1,222 performance units excluded) |
| Labor 0.5–1.5 hr | $50 | $240 | $100–$160/hr, shop survey |
⚠️ This is an editorial placeholder range for this type of repair. It is not based on real invoices or licensed pricing data yet. Real ranges will appear here once enough reader invoices for P0123 are verified.
Verified reader invoices for P0123: 0. Share your repair bill to help build real costs.
Tools that can read P0123
- ScanFixAI: Pro $29.99/mo or $249.99/yr
- OBDAI: Annual PRO bundle $299
- BlueDriver Pro Next-Gen: $119.95 list ($99.95 sale seen)
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