Power Steering Pressure Sensor/Switch Circuit High
What it means
P0553 means the ECM sees an abnormally high signal from the power-steering pressure sensor. That sensor tells the engine how hard the steering pump is working so it can raise idle to stop the engine bogging when you turn. The steering and brakes still work normally; the main effect is an occasional idle dip or surge during low-speed turns.
Can I keep driving? The car drives and stops normally; you may notice the idle dip or surge when turning the wheel at low speed. Steering itself is unaffected.
Real-world scan data
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
Common symptoms
What you'll notice
- Check-engine light on
- Idle dips, surges, or occasionally stalls when turning the wheel at low speed
- Rough idle during parking maneuvers
Common causes
Most likely first
- Faulty power-steering pressure sensor (signal stuck high)Likely
- Short to voltage or open in the sensor's signal wireCommon
- Corroded or loose connector at the sensorCommon
- ECM fault (rare)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data to see when the high reading is logged.
- Inspect the connector and wiring at the power-steering pressure sensor for damage or corrosion.
- Measure the sensor's signal voltage and compare against specification while turning the wheel.
- Replace the power-steering pressure sensor if it reads high with the engine idling.
- If wiring and sensor are good, have the ECM circuit tested. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0553?+
Can I just clear P0553?+
Related codes
Read & clear P0553 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.