AutoCodes – KIA – P1508 KIA

P1508 KIA Code - Idle Air Control Valve Closing Coil Voltage High

Quick Answer

P1508 KIA indicates Idle Air Control Valve Closing Coil Voltage High. Common causes include Faulty Idle Air Control Valve, Idle Air Control Valve harness is open or shorted, Idle Air Control Valve circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1508 KIA indicates Idle Air Control Valve Closing Coil Voltage High.
Common causes
Common causes include Faulty Idle Air Control Valve, Idle Air Control Valve harness is open or shorted, Idle Air Control Valve circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 11,652
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 25, 2019
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Code P1508 KIA Description

OBDII Code P1508 KIA - Idle Air Control Valve Closing Coil Voltage High - AutoCodes.com
P1508 KIA Code - Idle Air Control Valve Closing Coil Voltage High

What are the Possible Causes of the DTC P1508 KIA?

  • Faulty Idle Air Control Valve
  • Idle Air Control Valve harness is open or shorted
  • Idle Air Control Valve circuit poor electrical connection

How to Fix the DTC P1508 KIA?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1508 KIA code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1508 KIA Code

1. What does the OBDII code P1508 mean for a Kia?

P1508 indicates that the Idle Air Control (IAC) Valve Closing Coil Voltage is too high, which may affect the engine's idle performance.

2. What are common symptoms of code P1508 in a Kia?

Symptoms may include rough idling, stalling, higher-than-normal idle RPM, and a possible check engine light.

3. What causes the P1508 code in a Kia?

Common causes include a faulty Idle Air Control (IAC) valve, damaged wiring or connectors, a failing PCM, or carbon buildup obstructing the IAC valve.

4. Can a dirty throttle body cause the P1508 code?

Yes, carbon buildup in the IAC valve or throttle body can restrict airflow and cause this code to appear.

5. How do I diagnose the P1508 code on my Kia?

Start by inspecting the IAC valve and its connections, checking for damaged wiring, testing the valve with a multimeter, and cleaning the throttle body if needed.

6. Can I drive my Kia with a P1508 code?

While the car may still be drivable, ignoring the issue can lead to poor performance, stalling, and potential long-term damage.

7. How do I fix the P1508 code in my Kia?

Repairs may include cleaning or replacing the IAC valve, checking and repairing wiring or connectors, or updating/reprogramming the PCM if necessary.

8. How much does it cost to fix a P1508 code on a Kia?

The cost varies but typically ranges from $100 to $400, depending on whether the IAC valve needs replacement or just cleaning.

9. Can a bad battery cause the P1508 code in a Kia?

A weak or failing battery can sometimes cause voltage-related issues, but it is not a common cause for this specific code.

10. How can I prevent the P1508 code from recurring?

Regular maintenance, such as cleaning the throttle body and checking for electrical connection issues, can help prevent this code.

Discuss the causes and fixes for P1508 KIA OBDII Code

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