Notes On Intermittents
WARNING: This page is about a different car, the 1988 Cadillac Seville and 1988 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.
If code EO22 is intermittent, manipulate related wiring while observing ECM parameter ED01. Cycle TPS through its travel and tap on TPS with a pencil to test for intermittent TPS operation. If fault is induced, parameter will skip to -6 degrees or less. If wiring and connectors are okay, substitute a known good TPS sensor and retest.
Review snapshot data parameters stored with this code to verify failure. If failure is verified, check and repair intermittent wiring connection or sensor.
NOTE:
If a hard code EO22 is accompanied by hard code EO32, see DFI Chart A, "Multiple ECM Codes Stored Hard".