Power Steering Pressure Sensor Circuit Range/Performance
The power steering pressure sensor circuit is reading values outside the expected range or is not performing as the PCM expects. This code indicates the sensor, wiring, or power steering system pressure is not within normal parameters, affecting steering assist operation.
What You Might Notice
- Erratic or unstable idle
- Engine stalling or hesitation
- Intermittent power steering assist (choppy or delayed steering response)
- Hard steering or difficulty turning the wheel
- Whining noise from power steering pump
- Power steering fluid leaking
- Poor vehicle handling and control
Most Common Causes
- 1
Faulty power steering pressure sensor
The sensor itself may be defective, stuck, or out of calibration, causing it to send incorrect pressure readings to the PCM.
- 2
Wiring or connector issues
Damaged, corroded, or loose wiring and connectors in the sensor circuit can cause intermittent or out-of-range signal readings.
- 3
Low or contaminated power steering fluid
Insufficient fluid level or dirty fluid reduces system pressure and can cause the sensor to read outside normal parameters.
- 4
Power steering pump malfunction
A failing pump may not generate proper pressure, causing the sensor to detect abnormal pressure values in the system.
How to Diagnose It
- 1
Check Faulty power steering pressure sensor — The sensor itself may be defective, stuck, or out of calibration, causing it to send incorrect pressure readings to the PCM.
- 2
Check Wiring or connector issues — Damaged, corroded, or loose wiring and connectors in the sensor circuit can cause intermittent or out-of-range signal readings.
- 3
Check Low or contaminated power steering fluid — Insufficient fluid level or dirty fluid reduces system pressure and can cause the sensor to read outside normal parameters.
- 4
Check Power steering pump malfunction — A failing pump may not generate proper pressure, causing the sensor to detect abnormal pressure values in the system.
How to Fix It
- 1
Inspect and test the power steering pressure sensor
Use a scan tool to monitor live sensor readings under different steering conditions. Replace the sensor if readings are erratic or out of range.
- 2
Check wiring and connectors
Inspect the sensor circuit wiring for damage, corrosion, or loose connections. Clean connectors with electrical contact cleaner and repair or replace damaged wiring as needed.
- 3
Check and replace power steering fluid
Verify fluid level is at the correct mark and inspect for contamination or discoloration. Flush and refill with the manufacturer-specified fluid if needed.
- 4
Test and service the power steering pump
Use a pressure gauge to measure actual system pressure during operation. If pressure is abnormally low or high, the pump may need servicing or replacement.
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