P00A7
Intake Air Temperature Sensor 2 Circuit Low Bank 2
Fuel & air metering
Generic OBD-II
Low
What it means
P00A7 means the second intake air temperature sensor on Bank 2 is sending an abnormally low signal voltage — usually a wiring short to ground or a failed sensor, so the ECM sees an implausibly hot reading. The engine keeps running on a substituted air-temperature value, so the practical effect is minor: slightly off fuel mixture and cold-start behavior.
Low
Can I keep driving? Yes — the car drives normally; a wrong intake-air temperature reading only slightly affects fuel mixture and cold-start smoothness.
Common symptoms
What you'll notice
- Check-engine light on
- Possibly slightly rough running or hesitation, especially on a turbocharged engine
- Minor drop in fuel economy
Common causes
Most likely first
- Intake air temperature sensor 2 signal wire shorted to groundLikely
- Faulty intake air temperature (IAT) sensor 2 on Bank 2Common
- Corroded or loose connector at the sensorCommon
- Faulty ECM/PCM (rare)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and inspect the IAT sensor 2 connector and wiring for a short to ground or damage.
- Compare the sensor's reading to a known-good temperature on a scan tool.
- Replace the IAT 2 sensor if it reads out of range; repair any shorted wiring.
- Clear and retest; consider the ECM only after wiring and sensor test good.
FAQ
Quick answers
Is it safe to drive with P00A7?+
Yes. This is an air-temperature sensor signal fault, so the engine runs and drives; you may notice slightly rougher cold running or a small economy loss until it's fixed.
Can I just clear P00A7?+
It will come back unless the sensor or its wiring is repaired, since the ECM keeps checking the circuit voltage.
Related codes
Often seen with P00A7
Read & clear P00A7 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