FixVault

1/1 O2 Sensor Usage (08-008-05)

Publication date: 2005-02-04
Reference number: 08-008-05

1/1 O2 SENSOR USAGE

1/1 O2 SENSOR USAGE

TECHNICAL SERVICE BULLETIN

Reference Number(s): 08-008-05, Date of Issue:  February 4, 2005
CHRYSLER: 2005 (CS) Pacifica
CHRYSLER: 2005 (RS) Town & Country/Caravan/Voyager
CHRYSLER: 2005 (RG) Chrysler Voyager (International Markets)
GROUP: Electrical

SUBJECT

1/1 O2 Sensor Usage

MODELS

MODELS

Year Model Code Model
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 3.3/3.8L engine (sales code EGA, EGM and EGH).

DISCUSSION

A new 1/1 O2 sensor (PN 56029085AA) has been introduced on the 3.3/3.8L engines for the 2005 RS/RG and CS vehicles built after July 8, 2004 (MDH 0708XX). Installing an incorrect 1/1 O2 sensor will cause a MIL illumination for DTC P0135 - O2 Sensor 1/1 Heater Performance to be set.

The operation of the new O2 sensor has also changed. The new 1/1 O2 sensor runs at 100% duty cycle all the time because the resistance of the heater is higher. Monitoring the 1/1 O2 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 O2 Sensor Usage

2005 MODEL YEAR 1/1 O2 SENSOR USAGE

Part No. Build Date Heater Resistance Description Sales Code
56029085AA built after July 8, 2004 7.5 to 10 ohm at 70°F (20°C) 1/1 O2 Sensor XZZ
56029052AA built on or before July 8, 2004 2.0 to 2.8 ohms at 70°F(20°C) 1/1 O2 Sensor (blue wire in sensor pigtail -XZZ

POLICY

Information Only.