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Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB (https://www.ft86club.com/forums/index.php)
-   Engine, Exhaust, Transmission (https://www.ft86club.com/forums/forumdisplay.php?f=8)
-   -   CEL but OFT says NO ECU issues (https://www.ft86club.com/forums/showthread.php?t=122728)

TwistedGray 10-16-2017 06:49 PM
CEL but OFT says NO ECU issues
 
1 Attachment(s)
Update: It seems that the reason for it not functioning "properly" is because I never ran a tune on it (yet).

See pic, any ideas. Everything sounds normal as far as an "audio" inspection is concerned. Nothing weird happened. I pulled into a parking spot, turned car off, picked up stuff, got in car, turned on, and then CEL. I drove it home, turned it off, started it, and still CEL. I ran the OFT thereafter and says NO ECU issues (see pic).

October 17th update
UPDATE - Went to AutoZone and used theirs. It came back
Quote:
P0351 Ignition Coil A primary/secondary circuit fault
Probable cause
1 - Open or short circuit condition
2 - Ignition system fault
3 - Faulty ignition coil
Note: After their reader was done the CEL went away. I've since started, stopped, driven, etc several times and it has not come back.

strat61caster 10-16-2017 08:04 PM
Do you leave the OFT plugged in?

TwistedGray 10-16-2017 08:13 PM
Quote:
Originally Posted by strat61caster (Post 2992746)
Do you leave the OFT plugged in?
No, it hasn't been plugged in for at least a month or longer.

TwistedGray 10-16-2017 08:27 PM
Truth be told, I still have not even reflashed the ECU with a tune from it, lol.

NRXRaptor 10-17-2017 12:24 AM
That might be why. Maybe the OFT isn't supposed to clear CELs from a stock ECU, but I don't really know

TwistedGray 10-17-2017 01:16 AM
Quote:
Originally Posted by NRXRaptor (Post 2992827)
That might be why. Maybe the OFT isn't supposed to clear CELs from a stock ECU, but I don't really know
Oh, yeah I didn't consider that. Maybe I'll run it down to Autozone tomorrow to see if they can read it...I think they do that for free?

guybo 10-17-2017 06:07 AM
Is your car an auto or MT? The OFT reads engine codes, but you need a different tool to read trans codes

Sportsguy83 10-17-2017 09:57 AM
I suggest reading from an actual OBD2 reader, OFT may not be able to read all codes or the code might not be from the engine computer, but from another one of the car systems.

TwistedGray 10-17-2017 01:35 PM
Quote:
Originally Posted by guybo (Post 2992891)
Is your car an auto or MT? The OFT reads engine codes, but you need a different tool to read trans codes
Manual

TwistedGray 10-17-2017 01:35 PM
Quote:
Originally Posted by Sportsguy83 (Post 2992928)
I suggest reading from an actual OBD2 reader, OFT may not be able to read all codes or the code might not be from the engine computer, but from another one of the car systems.
Noted, thx

VoltsFRS2013 10-17-2017 02:31 PM
basic and I'm sure you've already checked but open and refasten your gas cap.

driggity 10-17-2017 03:31 PM
Quote:
Originally Posted by TwistedGray (Post 2992837)
Oh, yeah I didn't consider that. Maybe I'll run it down to Autozone tomorrow to see if they can read it...I think they do that for free?


Yes, they'll probably just let you borrow one and then go scan it yourself. I've done that in the past before I had a Bluetooth ODB-II reader.

TwistedGray 10-17-2017 03:49 PM
Quote:
Originally Posted by VoltsFRS2013 (Post 2993044)
basic and I'm sure you've already checked but open and refasten your gas cap.
Nope, didn't even think about that. I hadn't touched it in 200ish miles actually.

TwistedGray 10-17-2017 03:51 PM
UPDATE - Went to AutoZone and used theirs. It came back
Quote:
P0351 Ignition Coil A primary/secondary circuit fault
Probable cause
1 - Open or short circuit condition
2 - Ignition system fault
3 - Faulty ignition coil
Note: After their reader was done the CEL went away. I've since started, stopped, driven, etc several times and it has not come back.


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