Kia Trouble Codes and Known Issues

Kia shares engines and platforms with Hyundai, so its common failures are very similar. The Rio, Forte, Soul, Sportage, Sorento and Optima are the most searched models, with Gamma, Nu and Theta engines and CVVT variable valve timing.

Most searched models: Rio, Picanto, Soluto, Forte / Cerato, Soul, Sportage, Seltos, Optima and Sorento.

Common problems on Kia vehicles

• CVVT oil control valves.
• Theta II engines in the Optima, Sorento and Sportage 2.4 (2011 to 2019): bearing wear, covered by manufacturer campaigns and extended warranties in several markets.
• Camshaft sensors and canister purge valve.

Tips for diagnosing a Kia

• Ask the dealer whether your Kia with a Theta II engine has an open campaign.
• Hyundai and Kia parts for the same engine are often interchangeable: compare part numbers.

Do you have several codes at once? Use the free multi-code diagnosis for Kia: it sorts the codes by priority and shows these make-specific notes. Below are the codes with documented quirks on Kia vehicles.

Make notes are a guide based on well-known common failures. Always confirm with the manufacturer's documentation for your engine and model year.