Tech Tip: Kia Optima's MIL Is On With DTC P0123 Set

Main Navigation

Advertisement
Social Connect
Resources
Our Brand Family
Techshop Magazine
The automotive industry’s knowledge base for equipment, tools and supplies
From the Magazine

Tech Tip: Kia Optima’s MIL Is On With DTC P0123 Set

This bulletin provides information relating to an engine hesitation or the illumination of the Malfunction Indicator Lamp (MIL) for P0123 (Throttle Position Sensor/Switch "A" Circuit High Input). Improper throttle position sensor (TPS) values may cause the engine to hesitate under loads or cause the illumination of the MIL. To correct this condition, the TPS has been improved.

TechShop Staff Writers
By TechShop Staff Writers
Published:

Affected Vehicle Range:

Related Articles

• 2001-’06 Optima (MS) equipped with 2.5L/2.7L (V6) Delta engine (produced between Oct. 17, 2000 and Aug. 31, 2005)
• 2005-’07 Sportage (KM) equipped with 27L (V6) Delta ­engine (produced between Oct. 28, 2004 and May 18, 2007)

Repair Procedure:

1. Turn the ignition key to the Off position. Open the hood and remove the engine cover. Disconnect the VIS (Variable Induction System) connector and the injector connector, if equipped. See Fig. 1.
fig. 1
2. Disconnect the idle speed control actuator (ISCA) connector and remove the two retaining bolts. ­Remove the ISCA and gasket.

3. Disconnect the TPS connector and remove the two mounting screws.

4. Install the new TPS sensor onto the throttle body and torque the two screws (1.5-2.5 Nm/13.2-21.6 in.-lbs.). Reconnect the TPS connector. See Fig. 2.
Fig. 2
5. Install a new ISCA gasket and re-install the ISCA actuator. Torque the ISCA bolts (6-8 Nm/52.8-69.6 in.-lb.) and reconnect the ISCA connector. Reconnect the VIS connector and the injector connector, if equipped.

6. Reinstall the engine cover.

Courtesy of ALLDATA.

You May Also Like

toolbox guide illustartion
Nadine Battah
Tire tread
From the Magazine

Maximize Your Scan Tool

Are you maximizing your scan tools to their full potential? Don’t let them be just an expensive code reader.

Eric Garbe
By Eric Garbe
Eric Garbe is a graduate of Columbus State Community College with a degree in Automotive Maintenance Technology. He has extensive independent and dealership field experience as a technician and shop owner and is an ASE Certified Master Technician and former Adjunct Automotive Professor. He has been professionally writing automotive technical articles and documents for many years and in his free time enjoys restoring old cars and creating custom interiors and upholstery.
Published:
Scan Tool

If there’s a truth that extends across all computerized devices, it’s that we likely utilize only a fraction of the things they have the ability to do. Mobile phones are a great example. How many people do you know who only use them for calls, voicemail and text messages? We all know they do so much more.The scan tools we use every day fall into the same category. Are you maximizing yours to their full potential? Don’t let them be just an expensive code reader. That may be easier said than done, because it takes a lot of time to understand both the scan tool and how well it interacts with the vehicles you’re working on, but there are a few factors that can help you dive a little deeper into the functions at your fingertips.

Read Full Article

More From the Magazine Posts
2024 Is Your Year to Be the Technician You Always Wanted to Be

As we enter 2024, strategic career planning is essential for success in the automotive repair industry.

By Nadine Battah
happy new year 2024
Impact Wrench Technology

Interchangeable anvils are a feature on some new impacts.

By TechShop Staff Writers
Tools in the Eye of the Beholder

We’re here to help you see all the tools, so you can invest wisely.

By TechShop Staff Writers
Multimeter Accuracy: How Important Is It?

Multimeter accuracy is critical for EV diagnostics.

By Eric Garbe
multimeter

Other Posts

New Snap-on Limited Edition Speed Demon Roll Cab

Features include next-level organization, durability, security, mobility and exclusive Speed Demon emblem.

By TechShop Staff Writers
Upgrade Your Air System: It’s Easier Than You Think

Improving your shop airflow is only a benefit, unless you like to spend more time, work harder and make less money.

By Eric Garbe
air flow tubes
More Than A Scan Tool

Scan tools serve as indispensable diagnostic hubs, offering access to a wealth of resources, from OEM technical bulletins to community-documented repairs.

By Eric Garbe
scan tool
Battling Stress and Burnout

Here are some quick tips for managing stress and avoiding burnout in the fast-paced automotive repair industry.

By Nadine Battah
Nadine Battah