P200A
Intake Manifold Runner Performance (Bank 1)
The intake manifold runner control (IMRC) on bank 1 reports that flap movement does not match the commanded position within the allowed time window — either too slow, too short a stroke, or position feedback off-target.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Carbon buildup restricts flap travelCommon
- Actuator weak or vacuum supply lowPossible
- Linkage worn — play between actuator and flapLess likely
Parts involved
- Intake Manifold Runner
- IMRC Actuator
- IMRC Position Sensor
P200A 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.