PCM - Incorrect DTCs P0112/P0113/P0117 and/or P0118: Overview

BULLETIN NO.: 97-T-45

ISSUE DATE: November, 1997

GROUP/SEQ. NO.: Engine - 09

CORPORATION NO.: 786508

SUBJECT:

Service Information on Incorrect DTCs P0112, P0113, P0117 and/or P0118 Stored in PCM Memory

MODELS AFFECTED:

1998 Saturns

PURPOSE:

The diagnostic trouble code (DTC) logic for the inlet air temperature (IAT) and engine coolant temperature (ECT) sensors was incorrectly reversed for 1998 model year vehicles. This was due to a software programming error that mistakenly reversed the diagnostic trouble code logic.

When diagnosing 1998 vehicles with DTC P0112, P0113, P0117 and/or P0118 stored in PCM memory, refer to the revised service manual diagnostic procedures included in this bulletin.





Refer to the following table for the correct DTC description. The table also cross references the DTCs between 1996 and 1997 vehicles versus 1998 vehicles.