Engine Controls - MIL ON/Multiple O2 Sensor DTC's Set
NUMBER: 08-034-05GROUP: Electrical
DATE: June 30, 2005
SUBJECT:
MIL Illumination, DTC's P0037, P0058, P0131, P0132, P0133, P0138, P0151, P0153, P0159
OVERVIEW:
This bulletin involves repositioning the upstream Oxygen (02) sensor connectors and replacing the wiring harness connector(s) and 02 sensor(s) as necessary.
MODELS:
2005-2006 (LX) 300/Magnum/Charger
NOTE:
This bulletin applies to vehicles equipped with a 2.7L, 3.5L or 5.7L engine (sales code EER, EGG or EZB).
SYMPTOM/CONDITION:
MIL Illumination due to one or more of the following DTC's:
^ P0037-02 SENSOR 1/2 HEATER CIRCUIT LOW
^ P0058-02 SENSOR 2/2 HEATER CIRCUIT HIGH
^ P0131-02 SENSOR 1/1 CIRCUIT LOW
^ P0132-02 SENSOR 1/1 CIRCUIT HIGH
^ P0133-02 SENSOR 1/1 SLOW RESPONSE
^ P0138-02 SENSOR 1/2 CIRCUIT HIGH
^ PO1S1-02 SENSOR 2/1 CIRCUIT LOW
^ P0153-02 SENSOR 2/1 SLOW RESPONSE
^ P0159-02 SENSOR 2/2 SLOW RESPONSE
The condition may be due to the cowl drain flowing water onto the connectors for the 02 sensor(s) at the center rear area of the engine. This leads to water intrusion into the wiring harness connector(s) which may lead to terminal corrosion and/or MIL illumination.
DIAGNOSIS:
NOTE:
If the vehicle is equipped with a 5.7L engine (sales code EZB) and was built on or before August 18, 2004 (MDH 0818XX), perform Service Bulletin 18-031-04 REV A as necessary before continuing with diagnosis. For 2.7L and 3.5L engines continue with the diagnosis.
1. Open the hood
2. Disconnect the 02 Sensor connectors and check for water intrusion and/or corrosion in both upstream 02 sensor connectors at the center rear area of the engine.
a. If no water or corrosion is present, reposition the wiring harness connectors to the outboard edge of the valve cover away from the center of the engine. Tie strap the harnesses in place. If no water or corrosion was present, further diagnosis is required. This bulletin does not apply.
b. If water is present but no corrosion, blow out the connector(s) and reposition the wiring harness to the outboard edge of the valve cover away from the center of the engine. Tie strap the harness in place.
c. If corrosion is present, perform the Repair Procedure.
PARTS REQUIRED:
SPECIAL TOOLS/EQUIPMENT REQUIRED:
REPAIR PROCEDURE:
2.7L and 3.5L Engines Replace 02 Sensor and Wiring Harness Connector
1. Remove the appropriate 02 sensor. Refer to the detailed removal procedures available in TechCONNECT, under: Service Info, 14 - Fuel System, Fuel Injection, 02 Sensor, Removal.
NOTE:
It may be necessary to disconnect the purge vacuum harness to gain better access to the harness connectors.
2. Replace the wiring harness connector, using kit p/n 05161925AA. Refer to the detailed removal procedures available in TechCONNECT, under: Service Info, 8 - Electrical, Wiring Diagram Information, Wire, Standard Procedures, Wire Splicing.
3. Install the new 02 sensor using the appropriate part number. Refer to the detailed removal procedures available in TechCONNECT, under: Service Info, 14 - Fuel System, Fuel Injection, 02 Sensor, Installation.
4. Reposition the wiring harness connectors to the outboard edge of the valve cover away from the center of the engine. Tie strap the harnesses in place.
5.7L Engine Replace 02 Sensor and Wiring Harness Connector
1. Release Fuel Pressure. Refer to the detailed removal procedures available in TechCONNECT, under: Service Info, 14 - Fuel System, Fuel Delivery, Standard Procedure - Fuel Pressure Release.
WARNING:
THE FUEL SYSTEM IS UNDER CONSTANT PRESSURE EVEN WITH ENGINE OFF. BEFORE SERVICING FUEL RAIL, FUEL SYSTEM PRESSURE MUST BE RELEASED.
2. Disconnect the negative battery cable.
3. Remove the intake manifold. Refer to the detailed removal procedures available in TechCONNECT, under: Engine, Manifolds, Manifold - Intake, Removal.
4. Remove the 3 engine harness retaining clips from the engine harness bracket.
5. Disconnect and remove the appropriate 02 sensor. Refer to the detailed removal procedures available in TechCONNECT, under: Service Info, 14 - Fuel System, Fuel Injection, 02 Sensor, Removal.
6. Pull the lower harness up to access the 02 harness connectors.
7. Replace the wiring harness connector, using kit pin 05161925AA. Refer to the detailed removal procedures available in TechCONNECT, under: Service Info, 8 - Electrical, Wiring Diagram Information, Wire, Standard Procedures, Wire Splicing.
8. Install the new 02 sensor using the appropriate part number. Refer to the detailed removal procedures available in TechCONNECT, under: Service Info, 14 - Fuel System, Fuel Injection, 02 Sensor, Installation.
9. Reposition the wiring harness connectors to the outboard edge of the valve cover away from the center of the engine. Tie strap the harnesses in place.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
FAILURE CODE:
Disclaimer:
This bulletin is supplied as technical information only and is not an authorization for repair.