LR3 (LA) V8-4394cc 4.4L (2005)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
Engine Controls - MIL ON/DTC's P0170/P0173/P2097/P2099
No.: LTB00071
Issue: 3
Date: 13 May 2008
THIS BULLETIN REPLACES JTB00071 ISSUE 2, DATED 05 OCT 2007. CHANGES ARE HIGHLIGHTED WITH GRAY BACKGROUND.
SECTION: 419
"MIL" Illumination with P-Codes P0170/0173/2097/2099 or P0461 - Repair Procedure
AFFECTED VEHICLE RANGE (ECM ONLY)
AFFECTED VEHICLE RANGE (ECM & TCM)
CONDITION SUMMARY:
MIL ON WITH DTC P0170/0173/2097/2099 AND/OR P0461 STORED
Situation:
The Malfunction Indicator Lamp (MIL) may illuminate. Upon investigation with IDS the Diagnostic Trouble Codes (DTC) P0170/P0173 and/or P0461
may be stored. (NOTE: For later engine calibrations the codes P2097/P2099 replace P0170/P0173.) Over-sensitive Engine Control Module (ECM)
calibrations can result in P0170/P0173 (P2097/P2099) when the HO2 sensor heater turns off too early. Also the code P0461 may be stored if the ECM
has observed a fuel sender accuracy issue. The P0461 code should not be a "MIL-on" requirement and that condition is adjusted with the latest software.
Action:
Should a customer express concern, re-configure the ECM. Depending on vehicle VIN also program the Transmission Control Module (TCM) using
Integrated Diagnostic System (IDS). Follow the Repair Procedure instructions in this bulletin.
TOOLS