P2D2D
Cold Start Intake Manifold Runner Performance Bank 1
During cold start, the intake manifold runner control on bank 1 does not produce the expected tumble/swirl effect. Linkage stiff, actuator sluggish, or runner alignment off.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Actuator response sluggish at coldCommon
- Linkage iced or stiffPossible
Parts involved
- IMRC Actuator B1
- Intake Manifold Runners
P2D2D 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.