Jeep Renegade stop/start warning light and check engine message issue after fuel injection sensor replacement on Jeep Renegade

Some Jeep Renegade owners report experiencing a stop/start warning light and check engine message after replacing a fuel injection sensor, which may indicate a fault detected in the system that disables the start/stop function. Additionally, issues with the ignition coil or spark plug can trigger the check engine light and impact the start/stop system. Some owners find that the on-board computer interprets low battery power as a reason to disable the start/stop feature, while others note that battery issues can sometimes resolve themselves once the battery is sufficiently charged. It is recommended for owners to have the Diagnostic Trouble Codes (DTCs) read by a scanner to accurately identify the specific issue, a service often provided for free at parts stores.