P0551

Tests 1 - 3:

Tests 4 - 7:

SYMPTOM
P0551 - POWER STEERING SWITCH FAILURE

WHEN MONITORED
With the ignition key ON and engine running.

SET CONDITION
With the vehicle above 40 mph for over 30 seconds, the power steering pressure switch remains open.

POSSIBLE CAUSES
- Wiring harness intermittent problem problem
- Power steering pressure switch ground circuit open
- Power steering pressure switch
- Power steering pressure switch sense circuit shorted to ground
- Power steering switch sense circuit open
- PCM