Check Engine Light: HELP. Code 20F206

AustinGRSupra

Well-Known Member
Joined
Aug 17, 2019
Threads
48
Messages
645
Reaction score
890
Location
Austin, TX
Car(s)
2020 GR Supra
So, the weather got cold, and I'm throwing a 20F206. It was also wet when I first got the DTC.

This is: Heat management module activation, line disconnect. (Whatever that means exactly)

I clear the code with Ecutek: it vanishes for 2 days, then reappears. Clear it again, it does not come back on after 20 minute drive today.

Car is in limp mode according to Ecutek data log (attached--logged when idle after light came on), but drives otherwise fine, so it's not the kind of limp mode that limits throttle, rpm, etc.

Questions:
1) Anyone else deal with this?
2) What is best solution? I'm thinking buy a new heat management module and replace?
I'm tuned so, Toyota ain't gonna warranty it.
3) What would you do?

Suggestions guys?

 

Attachments

Davidr3

Well-Known Member
First Name
David
Joined
Oct 20, 2021
Threads
5
Messages
99
Reaction score
80
Location
SoCal
Car(s)
BMW 335i
Toyota can only deny warranty on things the tune "breaks". Are you so sure the tune broke this part?
 

SupraTimo

Active Member
First Name
Marco
Joined
Jul 23, 2021
Threads
2
Messages
37
Reaction score
13
Location
xogegp12
Car(s)
2020 Toyota Supra GR
Hi All , sorry to revive this thread !
I have a check engine light in my car, I looked at the engine and my forge catch can was unplugged on both top hoses.
I plugged them back on and I thought that would be the issue !
The CEL still there , I plugged in a scanner and it says that there are no trouble codes .
I don’t want to take it to the dealer just to have the code cleared .
Any of you experience this ?
best regards
 

 
Top