P0278
Cylinder 6 Contribution/Balance
Cylinder 6 contributes less power than expected.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Injector or ignition coil weak on cylinder 6Common
Parts involved
- Injector Cyl6
- Ignition Coil Cyl6
P0278 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.