All codes › P0404
P0404: Exhaust Gas Recirculation "A" Control Circuit Range/Performance
What it means
The EGR valve isn't moving to the position the computer commands.
Severity: Medium EGR position wrong; rough idle possible.
Common causes
- Carbon buildup binding the valve
- Failing EGR valve
- Position sensor fault
- Wiring issue
Most common causes first. Exact causes vary by make, model and engine.
Can I fix it myself?
Sometimes DIY. Carbon binding is common; remove and clean.
Repair cost
SEEDED ESTIMATE Roughly $260–$480
Most likely repair: egr valve. Diagnosis fees, taxes and other causes are not included.
| Line | Low | High | Basis |
|---|---|---|---|
| EGR valve | $164 | $164 | Typical listed retail range, source (single example listing ($163.99)) |
| Labor 1–2 hr | $100 | $320 | $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 P0404 are verified.
Verified reader invoices for P0404: 0. Share your repair bill to help build real costs.
Tools that can read P0404
- 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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