Grand Cherokee

Check Engine Light Code P2181 For a Cooling System Performance Fault on Jeep Grand Cherokee

Problem Description and Possible Solution

On Vehicles with a 4.7L or 5.7L V8 engine, the Check Engine Light may illuminate with code P2181 for a cooling system performance fault. Or technicians tell us that updated software for the powertrain control module (PCM) is available to correct this concern.

Problem Data
RepairPal Verified
Average mileage: 138,179 (107,000–168,672)
Engines affected: 3.7L V6, 5.7L V8 HEMI
4 model years affected: 2006, 2007, 2008, 2009
17 people reported this problem
Viewing 1 - 4 of 4 comments
Wife was driving the car and said all the lights came on and the engine came on with another light she didn't know what it meant. Read the code off the OBDII and the cooling system performance 2181 was issued. How do I go about fixing it?
driving my 2007 jeep Cherokee last night I noticed that it was taken a long time to heat then the eng light came on had it checked code P2181 came up what do I need to do to correct this .
Engine light and battery lighy came on.. i pulled over and shut down. Took a few attempts to restart. When it restarted jusy enginr light was on. As soon as i got home i scanned code p2181. I reset code just to sre if it was a fluke has yet to come back on however now my DTE drops fast and mpg is horrible and i cant guess whats wrong.heater work, no light 2 weeks later and still bad
P2181 error code. Still has not been fixed. Temperature gauge stopped working and saw a light on the dash with a red lightning bolt. Added water to reservoir and still have the check engine light on but not the red lightning bolt. Temperature gauge works now as well.