Note On Intermittents

WARNING: This page is about a different car, the 1992 Cadillac Fleetwood and 1992 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.

This code can be caused by an open, short to ground or short to voltage on circuit No. 472 and/or 469. Also check for open or short in sensor connector, engine-to-dash connector or PCM connector. If no problems are found in wiring and connectors, substitute a known good sensor, and retest.

Fig 1: PCM Code E74, Schematic, MAT Sensor Signal Interrupt

Courtesy of GENERAL MOTORS CORP.