OBD-II Fault Code

P0554: Power Steering Pressure Sensor Circuit Intermittent

Meaning, symptoms, likely causes, diagnostic checks and repair guidance for P0554.

System family

Powertrain

Generic/SAE

Repair category

Steering system

Use this category to narrow your checks before replacing parts.

Severity

High

Severity is a general guide. Confirm with scan-tool data and vehicle symptoms.

What P0554 usually means

Power Steering Pressure Sensor Circuit Intermittent.

Common symptoms

Check Engine light; Poor drivability or reduced fuel economy depending on fault; Steering warning lamp or heavy/abnormal steering

Likely causes

Low voltage; Steering angle/torque sensor fault; Power steering motor/module issue; Wiring fault; Loose connector; Moisture/corrosion; Harness vibration fault

Diagnostic checks

Scan all modules and record freeze-frame data before clearing codes; Check battery voltage and related fuses; Check battery/charging system; Calibrate steering angle sensor if required after repair/alignment; Wiggle-test harness while watching live data; Inspect for water intrusion/corrosion

Repair guidance

Repair wiring/power supply, perform calibration, replace failed sensor/module after confirmation; Clean/secure connector and repair damaged harness

Verification after repair

Clear code, road-test through the same drive condition, then rescan

Note: Confirm vehicle make/model/year because manufacturer-specific codes can vary. A DTC identifies a circuit or system condition, not always the failed part.