MIL code P2181

**Hurst Equipped** · 02-16-2007, 07:41 PM

deleted

**Redfox0099** · 02-16-2007, 07:43 PM

(P2181) - Performance Malfunction in Cooling System

Coolant Temperature Sensor (CTS), don't overlook the possibility of a stuck thermostat or bad water pump.

**Hemi31** · 02-16-2007, 07:52 PM

The code is from the system having had air in it.I got it too when my cooling system air locked.

**bipto** · 02-16-2007, 07:54 PM

Originally Posted by Hemi31

The code is from the system having had air in it.I got it too when my cooling system air locked.

Man - it aint easy burpin' this bitch, eh?

**Hemi31** · 02-16-2007, 08:01 PM

Originally Posted by 65standard

man, i have done this like 9 times on this car already and never had so much trouble bleeding the cooling system. i need to pull this Milodon thermostat out and test it and drill a 1/8 hole in it if it's any good.

Pull the T-Stat and fill the block through the front cover.

**Redfox0099** · 02-16-2007, 08:04 PM

had mine do this today too geting my motor back together, Hemi31 helped me out...there is a bleeder screw in the front of the block next to the Thermostat placement....undo that some and add coolant to the block.

**Hemi31** · 02-16-2007, 08:05 PM

Originally Posted by Redfox0099

had mine do this today too geting my motor back together, Hemi31 helped me out...there is a bleeder screw in the front of the block next to the Thermostat placement....undo that some and add coolant to the block.

I think he already did that Nathan.....If there is a very large amout of air trapped that doesn't always work.

**CoolVanilla** · 02-16-2007, 08:10 PM

This might help. Download this PDF I created off AllData for this code...

P2181

**Hemi31** · 02-16-2007, 08:13 PM

Link no work

**CoolVanilla** · 02-16-2007, 08:46 PM

Originally Posted by Hemi31

Link no work

?? just tried it and it seemed fine. Enter anything for your name...

**Hemi31** · 02-16-2007, 08:48 PM

Originally Posted by CoolVanilla

?? just tried it and it seemed fine. Enter anything for your name...

Ahhh

**Redfox0099** · 02-16-2007, 11:10 PM

sniffle sniffle...Cv and I helped too :(

**cadzilla74** · 02-17-2007, 12:14 AM

Glad ya got it sorted out...must be an SRT thing...got a P0128 code on my RT 2 days ago. Trip to the dealer and the thermostat was stuck open...they replaced it no charge...funny thing was I told them what the problem was...they looked at me like I had just flown in from Mars...I said P0128 is a thermostat code and look here on the EVIC my coolant temp is only 160F degrees and I just drove over here. My dealer is pretty sure I'm a spy from DCX trying to keep them honest...lol. Really it's just the great info I get here that I go in armed with...but it's all good.