Engine Oil Pressure Sensor/Switch A Range/Performance
What it means
The engine computer has found that the oil pressure reading does not match what it expects for engine speed and temperature, for example staying fixed or reading implausibly high or low. The sensor may be inaccurate, but it can also be a real oil pressure problem, so check before continuing to drive.
Symptoms4
- Check engine light on.
- Oil pressure gauge shows an implausible or fixed reading.
- Oil pressure light occasionally flickers at idle.
- Ticking from the top of the engine at start-up if pressure is really low.
Possible causes6
- Inaccurate or slow oil pressure sensor.
- Low oil level, old oil, or oil of the wrong viscosity.
- Incorrect sensor fitted for the vehicle.
- Clogged oil pickup screen or oil filter.
- Weak oil pump or pressure relief valve.
- Internal engine wear lowering pressure (less common).
How to diagnose5
- Check the oil level, type and date of the last change.
- Watch the pressure reading on a scan tool at idle and while raising engine speed; it should change with speed.
- Fit a mechanical gauge and compare its reading with the sensor and with the manufacturer specification.
- If the mechanical gauge meets specification, the sensor is the suspect.
- If real pressure is low, inspect the oil filter, pickup screen and pump.
How to fix5
- Change the oil and filter using the viscosity the manufacturer specifies.
- Replace the oil pressure sensor with a correct part.
- Clean the oil pickup screen if it is clogged.
- Replace the oil pump or relief valve if real pressure is proven low.
- Clear the codes and confirm the pressure reading changes normally with engine speed.
Repair cost
In Saudi riyals; the highlighted part is the expected range for this fault.
The fix starts with an oil change or sensor at low cost, and rises sharply if real pressure is low and an oil pump or internal repair is needed.
Prices are rough estimates for common cars at independent workshops and vary with the car and the source of the part.
Prices last updated: September 2026
Frequently asked questions
How do I know if it is the sensor or real oil pressure?
The only reliable way is to measure pressure with a mechanical gauge and compare it with the manufacturer specification. If it is healthy, the sensor is the problem.
Can the oil type cause it?
Yes. Oil of the wrong viscosity or very old oil can shift pressure enough to set this code, so start with an oil change using the correct grade.
Can I drive with this code?
Only with care and after checking the oil level. If the red oil light comes on or you hear ticking, switch off the engine immediately.
This guide is for information only and does not replace an inspection by a qualified technician. If the fault involves brakes, steering, engine temperature, electrics or refrigerant, do not attempt the repair yourself.
Report a mistake
Spotted something inaccurate? Tell us and we will review and correct it.
Report received — thank you
This is your private tracking link. It shows the status and our reply as soon as it is posted.
The link is saved in this browser only.