Idle Speed Control Actuator Signal Low
Table of contents
P1505 KIA Possible Causes
- Faulty Idle Speed Control Actuator (ISCA) valve
- Idle Speed Control Actuator (ISCA) valve harness is open or shorted
- Idle Speed Control Actuator (ISCA) valve circuit poor electrical connection
How do I fix code P1505 KIA?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1505 KIA code
The cost of diagnosing the P1505 KIA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1505 KIA Description
The Idle Speed Control Actuator (ISCA) valve is installed on the intake manifold and controls the intake airflow that is bypassed around the throttle plate to keep constant engine speed when the throttle valve is closed. The function of the ISCA valve is to maintain idle speed according to various engine loads and conditions, and also to provide additional air during starting. The ISCA valve consists of an opening coil, a closing coil, and a permanent magnet. Based on information from various sensors, the Engine Control Module (ECM) controls both coils by grounding their control circuits. According to the control signals from the ECM, the valve rotor rotates to control the by pass airflow into the engine.