EATC codes 051 and 053
Good Morning,
The other day after praising my 2003 MM's climate control for a nearly flawless operation in Florida, naturally it failed. It now blows full heat when the engine is warmed up. My first thought was the blend door actuator but I have codes 051 and 053 when running the EATC test. I replaced the O rings earlier this year when the defrost was the only function. The AC works until the thermostat opens then goes full hot. I can't find anything on code 053 and what should I do with the 051? Thanks for your help,
Rob in North Florida
03 Marauder (Already goes to fast)
91 Cougar XR7 SC (Some go fast stuff)
90 Thinderbird Supercoupe (New motor, no go fast stuff)
46 Willys CJ2A Jeep (will never go fast no matter what I do)