Engine-Codes - Hyundai - P1506 HYUNDAI

P1506 HYUNDAI - Idle Speed Control Actuator Signal High

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What is this?
Table of contents

P1506 HYUNDAI 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 is the P1506 HYUNDAI code repair?

Start by checking 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.

What is the cost to diagnose the P1506 HYUNDAI code

Labor: 1.0

The cost to diagnose the P1506 HYUNDAI code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1506 HYUNDAI Meaning

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 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.

More Information

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