P029B
Cylinder 1 - Fuel Trim at Min Limit
Per-cylinder fuel trim on cylinder 1 has reached its minimum correction limit. Cylinder running too rich structurally.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Injector leaking on cylinder 1Common
Parts involved
- Injector Cyl1
P029B is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.