Engine Controls - MIL ON/DTC's P0136/P0139/P2271
26 10 02April 09, 2010
2022741 Supersedes T.B. Group 26 number 10-01 dated March 10, 2010 to correctly identify rear oxygen sensor as -G130-.
Vehicle Information
MIL ON or Flashing, Diagnostic Trouble Codes (DTCS) P0136, P0139 or P2271 Stored in ECM Fault Memory
The following DTCs may be stored in ECM Fault Memory:
Improved ECM software calibration released to stabilize 02 sensor diagnosis. 02 sensor diagnosis too sensitive and corruption of rear 02 sensor causing MIL ON with faults P0136, P0139, & P2271 present.
2009 Model Year ONLY: Replace Oxygen sensor -G130- Bank 1, Sensor 2 to repair vehicle with listed faults.
2010 Model Year Only: Replace Oxygen sensor -G130- Bank 1, Sensor 2 to repair vehicle with listed faults, and update program ECM using Software Version Management (SVM).
No production change required.
Service
2009 Model Year Vehicles ONLY:
Diagnose vehicle to verify fault codes.
If the following faults are stored in the ECM fault memory:
^ Replace Bank 1, Sensor 2 Oxygen sensor and tighten to 52 Nm (38 ft. lbs.), see Repair manual Group 26 Description and Operation.
Tip
Lubricate the Oxygen sensor thread with hot bolt paste -G 052 112 A3- only, DO NOT let the paste get into the slots on the oxygen sensor body.
2010 Model Year Vehicles Only:
Diagnose vehicle to verify fault codes.
If the following faults are stored in the ECM fault memory:
^ Replace Bank 1, Sensor 2 Oxygen sensor and tighten to 52 Nm (38 ft. lbs.), see Repair manual Group 26 Description and Operation.
^ Continue to Update Programming.
Update-Programming Procedure:
Tip:
Note:
^ Update the Engine Control Module using the SVM Unit code as listed in the table.
The procedure can be found in GFF under Functions/Component Selection, Software Version Management, Adapting Software.
Warning
Warranty
Required Parts and Tools
Additional Information
All part and service references provided in this Technical Bulletin are subject to change and/or removal.
Always check with your Parts Dept. and Repair Manuals for the latest information.