P0551

Tests 463 - 468:

Test 469:

SYMPTOM
P0551 - POWER STEERING PRESSURE SWITCH FAILURE

WHEN MONITORED
With the ignition key ON and engine running.

SET CONDITION
With the vehicle above 50 mph for over 30 seconds, the power steering pressure switch remains open.

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