Intake Manifold Runner Circuit Malfunction (Bank 1)

What This Means

The intake manifold runner system has detected a circuit malfunction condition. This enhanced OBD-II code monitors advanced emission control and fuel system components.

Common Symptoms

Check engine light on
Emissions concern
Performance change
Fuel economy variation

Common Causes

Sensor or actuator failure
Wiring damage
Carbon buildup
System degradation
PCM calibration issue

Estimated Repair Cost

$200 – $500

Parts and labor (varies by vehicle and location)

Difficulty:Advanced

Need This Fixed?

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For informational purposes only. Diagnostic trouble codes are starting points for diagnosis, not definitive answers. Always consult a certified mechanic for proper diagnosis and repair. Estimated costs vary by vehicle, location, and shop rates.