Note On Intermittents

WARNING: This page is about a different car, the 1989 Cadillac Fleetwood and 1989 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.

If a Code E22 is intermittent, manipulate related wiring while observing ECM parameter P.0.1. Check the TPS test point for short to ground. Cycle TPS through its travel and tap on TPS with a pencil or pocket screwdriver to test for intermittent TPS. If fault is induced, parameter will jump to -6 degrees or less.

Fig 1: Code E22 Schematic - Open Throttle Position Sensor Circuit

Fig 2: Code E22 Flow Chart - Open Throttle Position Sensor Ckt