DTC P0AAE-123: Hybrid Battery Pack Air Temperature Sensor "A" Circuit Low; DTC P0AAF-123: Hybrid Battery Pack Air Temperature Sensor "A" Circuit High [08/2013 - ]: Description
WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
- The inlet air temperature sensor (battery) is mounted on the HV battery. The resistance of the sensor varies in accordance with changes in the intake air temperature. The characteristics of the inlet air temperature sensor are the same as those of the battery temperature sensor. Refer to DESCRIPTION . The battery smart unit uses signals from the inlet air temperature sensor to control the air volume of the battery cooling blower assembly.
| DTC No. | INF Code | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| P0AAE P0AAF |
123 | When the temperature indicated by the inlet air temperature sensor is lower than a predetermined limit (open circuit) or is higher than a predetermined limit (short circuit) |
|
HINT:
After confirming that DTC P0AAE-123 or P0AAF-123 is output, use the Techstream to check "Inhaling Air Temp" in the HV ECU Data List.
| Displayed Temperature | Malfunction |
|---|---|
| -45 °C (-49 °F) or less | Open or +B short circuit |
| 95 °C (203 °F) or more | GND short |