Power Steering Pressure Sensor Circuit Range/Performance
Your car's power steering pressure sensor is sending a signal that's outside its normal operating range, like a gauge needle stuck in the wrong zone. The ECU can't trust the reading, so it triggers this code to alert you.
The ECM monitors voltage output from the power steering pressure sensor, which should vary proportionally with hydraulic pressure. When pressure changes, the sensor output should smoothly track within expected voltage limits. If the signal stays too high, too low, or doesn't respond to pressure changes, the ECM logs this fault.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Sensor Voltage Output | 0.5–4.5 volts (varies with pressure) | Below 0.2V or above 4.9V continuously |
| Pressure Response Rate | Voltage changes smoothly with steering demand | No change or erratic spikes during steering input |
Code P0552 is a moderate fault. You can generally drive to a workshop, but avoid long trips or high-load driving (motorway, uphill towing) until it is diagnosed. If the code keeps returning after clearing, or if you notice the symptoms listed above worsening, do not delay professional diagnosis. Many moderate codes have multiple possible root causes — a mechanic with live OBD data can identify the exact fault more efficiently than part-by-part trial and error.
Once the fault is repaired, P0552 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.