What does OBD2 code P0551 mean?+
P0551 stands for Power Steering Pressure Sensor Circuit Range/Performance. The power steering pressure sensor reading is outside expected range. This sensor tells the ECU when power steering load is high so idle speed can be increased.
What causes code P0551?+
Failed power steering pressure sensor; Wiring fault; Low power steering fluid causing pressure variation; Power steering pump worn
How do I fix code P0551?+
Check power steering fluid level; Inspect sensor wiring and connector; Test sensor output pressure; Replace power steering pressure sensor; Check power steering pump condition
How much does it cost to fix P0551?+
Estimated repair cost for P0551 is $50–$250.
Is P0551 DIY-friendly?+
Yes — P0551 is generally DIY-friendly with basic tools.