What causes a P0554 code?

P0554 can be triggered by several issues — see the verified probable causes and step-by-step diagnostics shared by mechanics and owners on OBDIY.

Can I drive with a P0554 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P0554 active.

Follow the step-by-step diagnostic on this page, then read the verified fixes contributed by other Heavy Truck owners — the answer marked "Verified Cause" worked for the original poster.

OBDIY

OBD-II

P0554

Power Steering Pressure Sensor Circuit Intermittent

What it means

The engine control module (ECM) detects an irregular or erratic signal from the power steering pressure (PSP) sensor circuit. This sensor monitors hydraulic load to adjust engine IDLE speed and prevent stalling during low-speed maneuvers.