AutoCodes – KIA – P1503 KIA

P1503 KIA Code - Auto Cruise Control Switch

Quick Answer

P1503 KIA indicates Auto Cruise Control Switch. Common causes include Faulty Auto Cruise Control Switch, Auto Cruise Control Switch harness is open or shorted, Auto Cruise Control Switch 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: P1503 KIA indicates Auto Cruise Control Switch.
Common causes: Common causes include Faulty Auto Cruise Control Switch, Auto Cruise Control Switch harness is open or shorted, Auto Cruise Control Switch 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 3,098

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 25, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1503 KIA Description

OBDII Code P1503 KIA - Auto Cruise Control Switch - AutoCodes.com — P1503 KIA Code - Auto Cruise Control Switch

What does this mean?

What are the Possible Causes of the DTC P1503 KIA?

Faulty Auto Cruise Control Switch
Auto Cruise Control Switch harness is open or shorted
Auto Cruise Control Switch poor electrical connection

How to Fix the DTC P1503 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 P1503 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.

Need more information about the P1503 KIA code?

Need more information on how to fix the P1503 KIA code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1503 KIA code diagnosed by a professional: Find a repair shop in your area

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 P1503 KIA Code

1. What does the OBDII code P1503 mean on a KIA?

P1503 on a KIA indicates an issue with the Auto Cruise Control Switch, often related to a malfunction in the switch circuit or its operation.

2. What are the common symptoms of code P1503 in a KIA?

Symptoms may include the cruise control system not engaging, the cruise control indicator light not functioning, or erratic cruise control behavior.

3. What causes the P1503 code to appear in a KIA?

The code can be triggered by a faulty cruise control switch, damaged wiring or connectors in the circuit, or a malfunction in the cruise control system itself.

4. How do I diagnose the P1503 code in my KIA?

Start by inspecting the cruise control switch and its wiring for damage or loose connections. Then, use a multimeter to test the switch's electrical continuity and check for voltage at the related circuit.

5. Can I drive my KIA with the P1503 code?

While the P1503 code typically won't affect drivability, the cruise control system may be inoperative, which could impact long-distance driving convenience.

6. How do I fix the P1503 code on a KIA?

Repair options include replacing a faulty cruise control switch, repairing damaged wiring or connectors, or recalibrating the cruise control system using a diagnostic tool.

7. How much does it cost to repair the P1503 code on a KIA?

Repair costs can vary, but replacing the cruise control switch typically costs between $100 and $250, depending on labor rates and parts pricing.

8. Can a faulty brake pedal switch cause the P1503 code?

Yes, a malfunctioning brake pedal switch can interfere with the cruise control system and potentially trigger the P1503 code.

9. Will clearing the P1503 code with a scan tool fix the issue?

Clearing the code may turn off the check engine light temporarily, but the underlying issue must be repaired to prevent the code from returning.

10. Do I need specialized tools to fix the P1503 code in a KIA?

Basic tools like a multimeter and a diagnostic scan tool may be needed to diagnose and repair the issue. Advanced repairs might require professional equipment.