Engine Controls - Hesitation/MIL ON/DTC P0123

GROUP: Engine

NUMBER: 038

MODEL:
Optima (MS)
Sportage (KM)

DATE: November 2007

SUBJECT:
2.5L/2.7L (DELTA) ENGINE HESITATION / MIL ILLUMINATION/P0123

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).





Some 2001-2006 Optima (MS) produced between 10-07-2000 - 08-31-2005, equipped with the 2.5L or 2.7L (V-6) Delta Engine and some Sportage (KM) models produced between 10-28-2004 - 05/18/2007 equipped with the 2.7L (V-6) Delta Engine are applicable for this bulletin. Improper throttle position sensor values may cause the engine to hesitate under loads or cause the illumination of the MIL. To correct for this condition the throttle position sensor (TPS) has been improved.





Part Number

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 it equipped.





2. Disconnect the idle speed control actuator (ISCA) connector and remove the two retaining bolts. Remove the ISCA and gasket.





3. Disconnect the throttle position sensor (TPS) connector and remove the two (2) 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.





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) reconnect the ISCA connector. Reconnect the VIS connector and the injector connector it equipped.

6. Reinstall the engine cover.

AFFECTED VEHICLE RANGE:
2001-2006 Optima (MS) equipped with 2.5L /2.7 (V-6) Delta Engine: (10/01/2000 - 8/31/2005)

2005-2007 Sportage (KM) equipped with 2.7L (V-6) Delta Engine:
(10/28/2004 - 05/18/2007)





PARTS INFORMATION





WARRANTY CLAIM INFORMATION