Fault-Code Library · Intake manifold
P2008: Intake manifold runner control circuit open
The ECU detects an open circuit in the intake runner or swirl-flap control system.
Common symptoms
- •Flat low-rpm response
- •Engine warning light
- •Rough running
- •Emissions fault
Likely causes
- •Runner actuator failure
- •Broken linkage
- •Connector or harness fault
- •Carbon-restricted manifold
First checks
- •Run an actuator test
- •Inspect linkage movement
- •Check power, ground, command, and manifold carbon buildup
Important
On some engines, loose intake-flap hardware can become a serious mechanical risk; inspect the system physically.
A fault code identifies a detected condition, not a failed part. Confirm manufacturer-specific subcodes and live data.
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