DTC P0551: Power Steering Switch Failure: Description

Power steering pressure switch sense circuit is monitored with engine running. DTC will set in Powertrain Control Module (PCM) memory when PCM senses open power steering pressure switch with vehicle speed at more than 40 MPH for more than 30 seconds. Possible causes for DTC to set are: defective power steering pressure switch, defective PCM, defective connector or defective wiring.