P00A5
Intake Air Temperature Sensor 2 Circuit Bank 2
Air intake / temperature sensor
Generic OBD-II
Low
What it means
P00A5 means the ECM sees an out-of-range or implausible signal from the second intake air temperature sensor on bank 2. This sensor helps fine-tune fueling and timing for air density. A circuit fault rarely affects how the car drives — expect a check-engine light and, at most, slightly rougher cold starts or a small economy loss.
Low
Can I keep driving? Generally safe to drive — an intake air temperature sensor fault won't strand you; the ECM uses a substitute value, with at most slightly rougher cold starts or a small economy hit.
Common symptoms
What you'll notice
- Check-engine light on
- Slightly rough or hesitant cold start
- Minor drop in fuel economy
- Often no noticeable driving change
Common causes
Most likely first
- Faulty Intake Air Temperature (IAT) Sensor 2 on bank 2Likely
- Open or shorted wiring in the sensor circuitCommon
- Corroded or loose sensor connectorCommon
- Rarely, an ECM/PCM faultLess often
How to diagnose & fix
Work through it in order
- Inspect the IAT Sensor 2 connector and wiring on bank 2 for damage, corrosion, or a loose fit.
- Compare the sensor's live reading against actual intake air temperature — it should track ambient at key-on.
- Measure sensor resistance against spec; replace the sensor if it reads out of range.
- If wiring and sensor check out, suspect the ECM. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P00A5?+
Yes. This is a temperature-sensor circuit fault; the engine runs on a fallback value and drives normally, though you should still fix it to keep fueling accurate.
Can I just clear P00A5?+
You can, but if the sensor or its wiring is faulty the code comes back within a drive cycle or two.
Related codes
Often seen with P00A5
Read & clear P00A5 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