My Haynes service manual lists a 41 as alternator field. Take you Jeep to an auto parts store & they usually test alternators for free.
Code 41 means: HO2S Heater
Oxygen sensor
The airbag light is usually classified as a code 41.
Code 41-Charging system circuit, check the alternator and wiring. The engine computer is also the voltage regulator.
12 is direct battery input to PCM was disconnected within the last 50-100 key on cycles. Code 41 is an open or shorted condition in the generator field control circuit. Occurs when the battery voltage from the ASD relay is below 11.75 volts. Code 55 simply means end of codes.
charging system excess or lack of field current
Code 41 is for the alternator not charging properly.
The 2007 Jeep Grand-Cherokee has a drag coefficient of .41 Cd.
The 2006 Jeep Grand-Cherokee has a drag coefficient of .41 Cd.
The 2005 Jeep Grand-Cherokee has a drag coefficient of .41 Cd.
The 2008 Jeep Grand-Cherokee has a drag coefficient of .41 Cd.
The 2009 Jeep Grand-Cherokee has a drag coefficient of .41 Cd.