TSB PS233 — Kia Service bulletin

PS233 is a service bulletin on file with NHTSA for the Kia Sorento, 2003–2006 model years, filed and re-filed as 2 documents. A TSB is factory repair guidance, not a recall — the repair is not automatically free.

What the bulletin says. PITSTOP: UNUSUAL FUEL TRIM VALUES AND/OR MISFIRE CODES AFTER INCORRECT ENGINE REPAIR - THIS OUTLINES THE PROCEDURE TO FOLLOW IF AFTER AN ENGINE REPAIR YOU ENCOUNTER A COMPLAINT RELATING TO MIL ON (DTC P)#)X) WITH A MISFIRE DURING ACCELERATION AND/OR YOU FIND UNUSUAL FUEL TRIM…

NHTSA's own summary of the document, quoted from the public manufacturer-communications file.

2Documents filed
1Vehicle named
4Model years

Vehicles and model years PS233 names

VehicleModel years
Kia Sorento 2003, 2004, 2005, 2006

Every document filed under PS233

Manufacturers re-issue a bulletin as the repair changes, and file separate copies for technicians and for owners. All of them carry the same number.

Document IDFiledType
PS233 January 17, 2013 Service bulletin
PS233 January 1, 2013 Service bulletin

What PS233 covers

Engine — the component vocabulary NHTSA files this communication under.

← All Kia Sorento TSB years TSB lookup by model

Questions buyers ask

What is TSB PS233?

PS233 is a service bulletin filed with NHTSA by Kia, covering the Kia Sorento across the 2003–2006 model years. NHTSA's summary reads: PITSTOP: UNUSUAL FUEL TRIM VALUES AND/OR MISFIRE CODES AFTER INCORRECT ENGINE REPAIR - THIS OUTLINES THE PROCEDURE TO FOLLOW IF AFTER AN ENGINE REPAIR YOU ENCOUNTER A COMPLAINT RELATING TO MIL ON (DTC P)#)X) WITH A MISFIRE DURING ACCELERATION AND/OR YOU FIND UNUSUAL FUEL TRIM…

Which vehicles does PS233 cover?

NHTSA's file names Kia Sorento (2003–2006). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.

Is TSB PS233 a recall, and is the repair free?

No. PS233 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.

How do I get the full text of PS233?

Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under PS233, its date, and NHTSA's own summary from the public file.

Data updated 2026-08-20 from NHTSA's public records

Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under PS233. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.