Engine Controls - SES Lamp ON/DTC P0442

Bulletin No.: 05-06-04-049

Date: August 17, 2005

TECHNICAL

Subject:
SES Lamp On with DTC P0442 "EVAP System Small Leak Detected" Set (Diagnose Evaporative Emission [EVAP] System, Repair as Necessary)

Models:
2000 Saturn S-Series Vehicles

with 1.9L Engine (VINs 7, 8 - RPOs LL0, L24)

Attention:
Fixed Operations Manager and Technician

Condition

Some customers may comment that the Service Engine Soon (SES) lamp is illuminated.

Upon further investigation, technicians may find diagnostic trouble code (DTC) P0442 "EVAP Small Leak Detected" set.

Cause

One of several EVAP system component issues may cause a DTC P0442 to set in the PCM and illuminate the SES light.

Correction

Refer to DTC P0442 diagnostic procedures in the appropriate 2000 Saturn S-Series Service Manual or SI (SI Document ID 882724) to diagnose and repair the vehicle as necessary. If there is no concern found, follow the diagnostic steps listed in the "Service Procedure" section of this bulletin and repair as necessary.

Service Procedure

Perform the following inspections and repair, if necessary:

1. Inspect both ends of all EVAP circuits for damaged and/or spread terminal pins.

2. Inspect the coolant temperature sensor connector for corroded, damaged, and/or spread pins.

3. Remove the coolant temperature sensor and inspect the temperature-sensing probe to determine if it is composite (plastic). If so, replace the coolant temperature sensor with a new sensor, which will contain an all-brass temperature-sensing probe.

4. Replace the thermostat.





Parts Information

Claim Information





For vehicles repaired under warranty, use the table.





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