P2580
Turbocharger/Supercharger Speed Sensor A Circuit Low
Turbo / boost
Generic OBD-II
Medium
What it means
P2580 means the sensor that measures how fast your turbocharger or supercharger is spinning is sending an abnormally low (or open) signal to the engine computer. Without a trusted speed reading, the ECM can't safely manage boost, so it often limits power or drops into limp mode. The cause is usually the sensor, its wiring, or a corroded connector rather than the turbo itself.
Medium
Can I keep driving? Usually drivable, but you may feel reduced power or limp mode until it's fixed.
Common symptoms
What you'll notice
- Check-engine light on
- Reduced power or limp mode
- Less boost than usual / sluggish acceleration
Common causes
Most likely first
- Faulty turbocharger/supercharger speed sensorLikely
- Sensor wiring shorted to ground or open (low signal)Common
- Corroded or loose connector at the sensorCommon
- ECM driver or reference fault (rule out wiring first)Less often
How to diagnose & fix
Work through it in order
- Inspect the speed-sensor connector and wiring for damage, corrosion, or a short to ground.
- Check the sensor's reference and signal circuits against spec with a meter.
- Replace the turbo/supercharger speed sensor if the circuit checks out but the signal stays low.
- Clear the code and road-test to confirm boost reads correctly.
FAQ
Quick answers
Is it safe to drive with P2580?+
Usually short-term, but the car may go into reduced-power mode; get it checked soon.
Can I just clear P2580?+
You can, but a wiring or sensor fault will bring it back until it's repaired.
Related codes
Often seen with P2580
Read & clear P2580 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX