Engine Controls - MIL ON/False DTC's P0133 or P0153: Overview
NUMBER: 18-044-03GROUP: Vehicle Performance
DATE: December 12, 2003
THIS BULLETIN IS BEING PROVIDED IN ADVANCE. THE SOFTWARE WILL BE AVAILABLE ON TechCONNECT ON OR AFTER DECEMBER 05, 2003.
SUBJECT:
Flash: Erroneous DTC P0133 or P0153 - Oxygen Sensor Slow Response
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software.
MODELS:
2003 (KJ) Liberty/Cherokee (All Markets)
NOTE:
This bulletin applies to vehicles equipped with a 3.7L engine and a 42RLE automatic transmission (sales code EKG and DG6 respectively).
SYMPTOM/CONDITION:
The customer may experience a MIL illumination. Further diagnosis may determine that the MIL was caused by one or more of the following Diagnostic Trouble Codes:
P0133 - 1/1 Oxygen Sensor Slow Response
P0153 - 2/1 Oxygen Sensor Slow Response
P0135 - 1/1 Oxygen Sensor Heater Failure
P0155 - 2/1 Oxygen Sensor Heater Failure
The condition may be intermittent and may be dependent upon driving habits and/or ambient temperatures. Colder temperatures may cause this condition to occur more frequently This condition may occur more frequently if the vehicle engine is started and allowed to warm up without driving the vehicle. DTC P0133 and P0153 have been determined to occur more frequently than DTC P0135 or P0155.
DIAGNOSIS:
Using a Scan Tool (DRBIII(R)) with the appropriate Diagnostic Procedures Manual, verify all engine systems are functioning as designed. If DTCs are present record them on the repair order and repair as necessary before proceeding further with this bulletin.
If the customer describes the Symptom/Condition, perform the Repair Procedure.
PARTS REQUIRED:
SPECIAL TOOLS/EQUIPMENT REQUIRED:
NOTE:
An updated J1962 cable has been released. This cable has a red colored connector at the DRBIII(R) connection. Use this cable whenever a flash is being performed.
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.