CEL P0351 Ignition Coil "A" Primary Control Circuit/Open - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

romin · 03-12-2013, 01:41 AM

I'm getting this CEL while running hard on the track.
I've cleared it several times and it keeps coming back.
Anyone else seeing it?
Any known fixes?

Visconti · 03-12-2013, 01:54 AM

You running a unichip?

romin · 03-12-2013, 02:01 AM

I've gotten this CEL both with and without my tune.
The engine seems to be running fine otherwise.

Using a prior "older tune" I did get some misfires and the CEL in question.

mad_sb · 03-12-2013, 08:17 AM

Quote:

Originally Posted by romin

I've gotten this CEL both with and without my tune.
The engine seems to be running fine otherwise.

Using a prior "older tune" I did get some misfires and the CEL in question.

remove the unichip and see if it goes away... interceptors can make sensitive monitors very unhappy. If you put it back to stock and still have the issue then you can at least rule out the unichip and start looking at replacing the coilpack etc.

ATL BRZ · 03-12-2013, 09:06 AM

Quote:

Originally Posted by romin

I've gotten this CEL both with and without my tune.
The engine seems to be running fine otherwise.

Using a prior "older tune" I did get some misfires and the CEL in question.

Were you tracking with a unichip or ecutek tune?

romin · 03-12-2013, 10:38 AM

I don't use or have a Unichip.

My car does have an EcuTek tune and the CEL first showed up while the tune was installed. I have since removed the tune, back to stock, and was able to reproduce the CEL but only on the track running hard.

Dave-ROR · 03-12-2013, 10:41 AM

Quote:

Originally Posted by romin

I'm getting this CEL while running hard on the track.
I've cleared it several times and it keeps coming back.
Anyone else seeing it?
Any known fixes?

Mine gets it also, completely stock ECU. At the dealership for a coil pack replacement right now actually. I'll see in a few weeks if it fixes it when I'm at the track again.

ATL BRZ · 03-12-2013, 10:58 AM

hmm are we uncovering a coil pack weakness or defect?

romin · 03-12-2013, 11:23 AM

Quote:

Originally Posted by Dave-ROR

Mine gets it also, completely stock ECU. At the dealership for a coil pack replacement right now actually. I'll see in a few weeks if it fixes it when I'm at the track again.

Did the dealer jump straight to the coils or did they check the plugs first? I'm wondering if we should be running a cooler plug on the track.

mad_sb · 03-12-2013, 11:43 AM

Quote:

Originally Posted by romin

I don't use or have a Unichip.

My car does have an EcuTek tune and the CEL first showed up while the tune was installed. I have since removed the tune, back to stock, and was able to reproduce the CEL but only on the track running hard.

My Bad, sounded like you were saying you had one, but zeroed it out.

From a quick look at the manual it may be an overheating problem with no. 1 coil pack:

Huehuecoyotl · 03-12-2013, 12:27 PM

tuned in to this thread..this sorta thing, potential for warranty replacement can worry the FI consumer..my audi went thru a coil pack recall, but no aftermarket FI stuff there

what is the intelligent way to see if a colder plug works better(whatever that is to a coil pack)or provided 'benefits' short of my paying a tuner to run dyno and some exh gas analysis? is this cause we're boosting and tuning? I doubt its the plugs so early on, but ya never know, if its happening with OE tuning, then there maybe something there in the way of breakage potential we have uncovered, is it a call to carry a spare?

I'm curious to know what the dealership finds/replaces

ultra · 03-12-2013, 12:45 PM

Stumbled on this thread while searching...

Just picked up my car from the dealer after throwing a CEL. Dealer said the car was throwing an ignition related code. Coil pack on one bank replaced + dealer ECU reflash = problem solved so far.

Dave-ROR · 03-12-2013, 01:13 PM

Quote:

Originally Posted by romin

Did the dealer jump straight to the coils or did they check the plugs first? I'm wondering if we should be running a cooler plug on the track.

Well technically they started the warranty claim off my picture of the code scanner, so they didn't see the car until this morning after the parts already arrived. I'm not sure what they are specifically checking first today.

Dave-ROR · 03-12-2013, 04:44 PM

OK so they replaced the Cyl 1 coil pack.. I'll see if it happens again.

03-12-2013, 01:41 AM	#1
romin Member Join Date: Aug 2012 Drives: BRZ, STI, 535, Tiffin Allegro Location: Austin TX Posts: 90 Thanks: 29 Thanked 71 Times in 24 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	CEL P0351 Ignition Coil "A" Primary Control Circuit/Open I'm getting this CEL while running hard on the track. I've cleared it several times and it keeps coming back. Anyone else seeing it? Any known fixes?

03-12-2013, 10:58 AM	#8
ATL BRZ Driving Coach Join Date: Jun 2012 Drives: BRZ Location: Atlanta Posts: 3,666 Thanks: 3,723 Thanked 4,137 Times in 1,707 Posts Mentioned: 90 Post(s) Tagged: 6 Thread(s)	hmm are we uncovering a coil pack weakness or defect? __________________ __________________________Pure Motorsport: JDL Turbo BRZ Track Build_______________________

03-12-2013, 12:45 PM	#12
ultra Curious cat. Join Date: May 2012 Drives: 86 GT base M/T - Red Location: Dubai Posts: 775 Thanks: 840 Thanked 383 Times in 191 Posts Mentioned: 31 Post(s) Tagged: 0 Thread(s)	Stumbled on this thread while searching... Just picked up my car from the dealer after throwing a CEL. Dealer said the car was throwing an ignition related code. Coil pack on one bank replaced + dealer ECU reflash = problem solved so far. __________________ 2013 Toyota 86 GT M/T 2009 Renault Clio Sport R27 Team F1 Edition (sold) 1991 Mazda MX5 Miata (sold) 2007 Mitsubishi Evo 9 RS (sold) 2006 VW Golf R32 (sold)

03-12-2013, 04:44 PM	#14
Dave-ROR Site Moderator Join Date: Dec 2010 Drives: Stuff Location: Florida Posts: 10,317 Thanks: 955 Thanked 5,965 Times in 2,689 Posts Mentioned: 262 Post(s) Tagged: 8 Thread(s)	OK so they replaced the Cyl 1 coil pack.. I'll see if it happens again. __________________ -Dave Track cars: 2013 Scion FRS, 1998 Acura Integra Type-R, 1993 Honda Civic Hatchback DD: 2005 Acura TSX Tow: 2022 F-450 Toys: 2001 Chevrolet Corvette Z06, 1993 Toyota MR2 Turbo, 1994 Toyota MR2 Turbo, 1991 Mitsubishi Galant VR-4 Parts: 2015 Subaru BRZ Limited, 2005 Acura TSX Projects: 2013 Subaru BRZ Limited track car build FS: 2004 GMC Sierra 2500 LT CCSB 8.1/Allison with 99k miles

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03-12-2013, 01:54 AM	#2
Visconti Banned Join Date: Apr 2012 Drives: 05 STi Location: Norwalk, CT Posts: 2,843 Thanks: 196 Thanked 3,188 Times in 1,197 Posts Mentioned: 375 Post(s) Tagged: 2 Thread(s)	You running a unichip?

03-12-2013, 02:01 AM	#3
romin Member Join Date: Aug 2012 Drives: BRZ, STI, 535, Tiffin Allegro Location: Austin TX Posts: 90 Thanks: 29 Thanked 71 Times in 24 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	I've gotten this CEL both with and without my tune. The engine seems to be running fine otherwise. Using a prior "older tune" I did get some misfires and the CEL in question.

03-12-2013, 10:38 AM	#6
romin Member Join Date: Aug 2012 Drives: BRZ, STI, 535, Tiffin Allegro Location: Austin TX Posts: 90 Thanks: 29 Thanked 71 Times in 24 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	I don't use or have a Unichip. My car does have an EcuTek tune and the CEL first showed up while the tune was installed. I have since removed the tune, back to stock, and was able to reproduce the CEL but only on the track running hard.

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