Under certain driving conditions, some 2006 and 2007 model year IS 250 vehicles may exhibit a M.I.L. “ON” condition with one or both of the following DTCs:
-P0172 (System Too Rich [Bank 1])
-P0175 (System Too Rich [Bank 2])
The Engine Control Module (ECM) (SAE term: Powertrain Control Module/PCM) logic has been modified to improve this condition.
NOTE:
Before proceeding, verify the ECM (PCM) calibration has NOT been updated by checking
for the Authorized Modifications Label (shown in step 1 of the Repair Procedure).
Attachments