What Does P0172 Mean on Your 2024 Kia Telluride?
A P0172 code on your 2024 Kia Telluride means the engine control module has detected that Bank 1 of your 3.8-liter Lambda II V6 is running too rich — excess fuel in the air-fuel mixture. This engine produces 291 horsepower and uses multi-port fuel injection. The ECM continuously adjusts fuel delivery using oxygen sensor feedback, and when Bank 1 fuel trim corrections exceed normal limits, this code is set.
Symptoms You Might Notice
- Check engine light illuminated
- Fuel economy below the rated 23 mpg combined
- Dark or black exhaust smoke
- Rough idle or vibration
- Reduced power and acceleration
- Fuel smell from the exhaust
Common Causes of P0172 on the 2024 Telluride
- Contaminated MAF Sensor — The mass airflow sensor can get dirty even on a new vehicle, causing inaccurate airflow readings and excessive fueling.
- Stuck Open EVAP Purge Valve — A documented Kia/Hyundai issue. The purge valve sticks open, flooding the intake with fuel vapors.
- Defective Oxygen Sensor (Bank 1) — A factory-defective or prematurely failing O2 sensor sends incorrect data to the ECM.
- ECM Software Issue — Software updates may address fuel trim calibration on the 2024 model year.
How to Diagnose the Problem
- Visit your Kia dealer — Under full warranty. Free diagnosis and repair, plus TSB and software update checks.
- Check for P0175 — If both banks are rich, the cause is system-wide. Bank 1 only points to Bank 1 components.
- Monitor fuel trims — Bank 1 LTFT below -10% confirms the rich condition.
- Inspect the MAF sensor — At idle, 3.8L V6 should read about 6-12 g/s.
- Verify O2 sensor operation — Check Bank 1 upstream sensor for proper switching.
Repair Options and Estimated Costs
- ECM software update — $0 under warranty
- MAF sensor cleaning or replacement — $10-$295 ($0 under warranty)
- EVAP purge valve replacement — $90-$225 ($0 under warranty)
- Oxygen sensor replacement — $180-$370 ($0 under warranty)
- Fuel injector service — $260-$580 ($0 under warranty)
All repairs on the 2024 Telluride are covered under Kia's factory warranty.
Prevention Tips
- Follow the Kia maintenance schedule
- Don't overfill the gas tank
- Use quality Top Tier gasoline
- Report warning lights to your dealer promptly
- Keep the air intake system clean