Engine Controls - MIL ON/DTC's P0116/P0128/P02097
ENGINEERING INFORMATIONBulletin No.: 09-06-04-017
Date: March 24, 2009
Subject:
EI09072 - Service Engine Soon (SES)/Check Engine Lamp On in Cold Weather with DTCs P0116, P0128 or P02097 Set (Engineering Information
Models:
2008 Saturn Astra
2009 Saturn Astra (Canada Only)
Attention:
Proceed with this bulletin ONLY if the customer has commented about this concern AND the EI number is listed in GMVIS. If the customer has not commented about this condition, or the EI does not show in GMVIS, disregard this bulletin and proceed with diagnostics found in published service information. THIS IS NOT A RECALL - refer to Service Bulletin 04-00-89-053B for more details on the use of Engineering Information bulletins.
Condition
Some customers may comment that the Service Engine Soon light illuminates in extremely cold weather.
Technicians may find one or more of the following DTCs may have set, requesting the SES/MIL lamp ON.
- P0116 - Engine Coolant Temperature Sensor Performance
- P0128 - Engine Coolant Temperature Below Thermostat Regulating Temperature
- P2097 - Post Catalyst Fuel Trim System High Limit
Important
The presence of these codes DOES NOT cause driveability, emissions or vehicle performance issues.
Instructions
At this time GM Engineering is attempting to determine the root cause of the DTCs setting.
You are requested to capture freeze frame data associated with the DTC codes in order to comply with this Engineering Information bulletin. In the Tech 2(R) Main Menu, please build the vehicle, select "On Board Diagnostics", and then "Freeze Frame Data".
- For vehicles with DTC P0116 and/or P0128 set, please fill out the form above with the proper freeze frame data and fax the entire document to GM Engineering. No other contact is required. Once you have supplied the requested data, please continue to diagnose and repair the vehicle through normal diagnostics outlined in SI.
- For vehicles with DTC P2097, there is no known field fix available. DO NOT replace any parts, including oxygen sensors, to attempt to repair the vehicle. Please fill out the form above with the proper freeze frame data and fax the entire document to the GM Engineer. No other contact is required. You should retain the customer's information so they may be contacted when a permanent field fix is issued.
- Once you have captured and reported the requested data, please clear the codes to turn off the SES lamp before returning the vehicle to the customer. These codes are most likely to reset only under conditions of extreme cold.
Warranty Information
For vehicles repaired under engineering direction, use the table above.
Disclaimer