When Monitored And Set Conditions
WARNING: This page is about a different car, the 2014 RAM 3500 HD and 2014 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
When Monitored:
This diagnostic runs continuously when the following conditions are met:
- Ignition on
- Battery voltage greater than 10.4 volts
Set Conditions:
- the Ambient Air Temperature Sensor input voltage is above the maximum acceptable value.
Default Actions:
- MIL is illuminated on the second consecutive trip that the diagnostic fails.
- The MIL will be turned off on the third consecutive trip that the diagnostic passes.
- If the vehicle is equipped with the stop/start feature, the system will be disabled when this DTC is active.
| Possible Causes |
|---|
| AAT SIGNAL CIRCUIT SHORTED TO VOLTAGE |
| AAT SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE |
| AAT SENSOR GROUND CIRCUIT OPEN OR HIGH RESISTANCE |
| AMBIENT AIR TEMPERATURE (AAT) SENSOR |
| POWERTRAIN CONTROL MODULE (PCM) |
| BODY CONTROL MODULE (BCM) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .