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Home › Oldsmobile › 1990 › Toronado Base, 4T60/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

Code E178, Power Steering Pressure Switch

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