All codes › P0122
P0122: Throttle/Pedal Position Sensor "A" Circuit Low
What it means
Throttle position sensor "A" voltage is too low.
Severity: High Car may refuse to accelerate past idle.
Common causes
- Open 5V reference
- Failed TPS
- Signal shorted to ground
- Unplugged sensor
Most common causes first. Exact causes vary by make, model and engine.
Can I fix it myself?
Sometimes DIY. Check 5V reference and ground at the TPS connector.
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 P0122 are verified.
Verified reader invoices for P0122: 0. Share your repair bill to help build real costs.
Tools that can read P0122
- 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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