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Home >> Oldsmobile >> 1990 >> Toronado Base, 440T4/ME9 >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> A/C-Heater System - Automatic >> Testing >> Input Data Display Code Definitions >> Code E178, Power Steering Pressure Switch
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Code E178, Power Steering Pressure Switch

Power steering pressure switch ("POWER STRG") display is "LO" when power steering pressure (effort) is high.