B3747

Air Flow Control 1 Feedback Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$33–167 (est.)

Symptoms

Rough engine idling
Reduced engine power
Increased fuel consumption
Check Engine Light Is On

Causes

Damper position sensor malfunction
Open or short circuit in wiring harness
Mechanical jamming of the intake manifold flaps
Control solenoid valve malfunction
Problems with power or circuit ground

How to Fix

Check the integrity of the wiring harness in the area between the sensor and the control unit
Check the resistance of the position sensor
Check the mechanical movement of the dampers manually
Check the operation of the control solenoid
Scan the system for additional errors

Related codes

P0101 P0102 P2004 P2008