When Monitored
WARNING: This page is about a different car, the 2025 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
The Cold Start Monitor diagnostic runs when all of the following enable conditions are met:
- After an engine off time of at least 200 minutes.
- Battery voltage is approximately above 10.7 volts.
- Engine cold start condition, which is determined by the difference between the engine coolant temperature and ambient temperature at engine start up being less than approximately 15°C (27°F).
- Engine start up coolant temperature is approximately above -7°C (19.4°F).
- Engine oil temperature is between approximately -15°C (5°F) and 188°C (370°F).
- No Cam/Crank Misalignment, Camshaft Slow Response, Engine Oil Pressure Sensor or Engine Oil Temperature Sensor DTCs present.
- Vehicle speed is between 0 - 70 mph.
- On a cold start, when the above enable conditions are met, the PCM will command the Bank 1 Exhaust Cam Phaser to a predetermined modeled target position and monitor the actual position of the Phaser to determine if it is within a calibrated threshold of the target.
- The Cold Start Monitor diagnostic will stop running if any of the following conditions occur:
- The engine stalls.
- The engine run time or diagnostic testing time exceeds a calibrated threshold.