Jeep Commander P0505: Idle Air Control System- Malfunction

P0505 is an OBDII code that deals with the idle air control system in the Jeep Commander.  It’s a generic code, which means that it has the same meaning for the Commander as it would any other vehicle (Commander or not). P0505:  Idle Air Control System:  Malfunction When P0505 is triggered, it is typically caused … Read more

Jeep Commander P0140: O2 Sensor → No Activity Detected B1S2

P0140 is a generic OBDII trouble code. It has the same meaning for any vehicle with OBDII, including the Jeep Commander. It means that the PCM/ECM is not detecting any activity from the sensor.  It doesn’t mean that the O2 sensor isn’t getting power, but that the voltage isn’t changing, which is the “no activity”. … Read more