Circuit Description
WARNING: This page is about a different car, the 1996 Cadillac Seville, 1996 Cadillac Eldorado, and 1996 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
PCM has the ability to disable 4 injectors during an engine over temperature (overheating) condition. Engine is considered over temperature whenever ECT reaches 268°F (131°C). This protection mode allows the PCM to alternate between groups of cylinders, thereby reducing coolant temperature. This is accomplished by disabling the fuel injectors. This DTC is set to show that an overheating condition was or is observed by the PCM and that the protection mode has been engaged.