Note On Intermittents

WARNING: This page is about a different car, the 1993 Cadillac Seville and 1993 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.

Manipulate power steering pressure switch connector with engine running. If intermittent is created, code will set. Disconnect and reconnect power steering connector to ensure it is properly latched.

Fig 1: PCM Code P040 Schematic - Open PSPS Circuit

Courtesy of GENERAL MOTORS CORP.

Fig 2: PCM Code P040 Flow Chart - Open PSPS Circuit

Courtesy of GENERAL MOTORS CORP.