Engine Controls - MIL ON/DTC P0135 (O2 Sensor)

NUMBER: 08-008-05

GROUP: Electrical

DATE: February 4, 2005

SUBJECT:
1/1 02 Sensor Usage

MODELS:

2005 (CS) Pacifica

2005 (RS) Town & Country/Caravan/Voyager

2005 (RG) Chrysler Voyager (International Markets)

NOTE:
This bulletin applies to 2005 CS vehicles equipped with a 3.8L engine (sales code EGH), 2005 RS or 2005 RG vehicles equipped with a 3.313.8L engine (sales code EGA, EGM and EGH).

DISCUSSION:

A new 1/1 02 sensor (PN 56029085AA) has been introduced on the 3.313.8L engines for the 2005 RS/RG and CS vehicles built after July 8, 2004 (MDH 0708XX). Installing an incorrect 1/1 02 sensor will cause a MIL illumination for DTC P0135 - 02 Sensor 1/1 Heater Performance to be set.

The operation of the new 02 sensor has also changed. The new 1/1 02 sensor runs at 100% duty cycle all the time because the resistance of the heater is higher. Monitoring the 1/1 02 sensor with the DRBIII(R) while the vehicle is in the service bay will show 100% duty cycle, which is normal for this new sensor.





2005 Model Year 1/1 02 Sensor Usage

POLICY:
Information Only.

Disclaimer:
This bulletin is supplied as technical information only and is not an authorization for repair.