CEL P0351 Ignition Coil "A" Primary Control Circuit/Open - Page 13 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

trueno86power · 08-21-2014, 07:09 AM

Annnd again an update on my P0351, tracked it yesterday and guess what...

Not DTC AT ALL !

So look like swapped the coil and heat protected them "solved" my problem.

It's great to make a track session without this damn light on.

Kido1986 · 08-26-2014, 08:21 PM

New one! P0353, days before Nationals!

I had a friend in parts pull strings to get one in house, getting it changed Saturday morning.

Crap.

Same behavior as previous, got it during ~80% throttle, 2-3 shift around 5500rpm

Deep Six · 08-31-2014, 09:53 AM

Quote:

Originally Posted by ATL BRZ

New revised part # OEM coil arrived.

I thought about getting some gold heat tape and putting some on the top part of the coil that is exposed but I don't have any and it would take a few days to order and ship, and I wanted to fix the P0351 as soon as possible.

Only one 10mm bolt holding it in. I just replaced it myself rather easily in about 20 minutes. Removed the three 10mm bolts holding in the ECU on the black fuel rail cover carefully after stuffing some shop towels below to catch any dropped bolts. Zip tied the box out of the way on the strut brace so it doesn't slide into anything. Then I grabbed the coil and pulled it straight out and then up to get the whole thing out. Pressed the connector down and pulled it off and the new one went back in just as easily. Just need patience and dexterity and it's pretty painless. The drivers side coils wouldn't be as easy, though, since there's more stuff in the way.

I put everything back the way it was and secured all the bolts before starting it again. Then I went for a drive and got everything nice and hot before doing a couple WOT pulls to redline and all is well. No more CEL.

I noticed the part # ends in 651. Most of the discount parts suppliers list the coil with part # ending in 650. Has there been a factory change ?

I still haven't addressed this yet as I have no track time in the short term

and there are no issues with street driving

ATL BRZ · 08-31-2014, 10:39 AM

Quote:

Originally Posted by Deep Six

I noticed the part # ends in 651. Most of the discount parts suppliers list the coil with part # ending in 650. Has there been a factory change ?

I still haven't addressed this yet as I have no track time in the short term

and there are no issues with street driving

Yes AFAIK the part number has been updated but I don't know if the part has actually been revised or not. I would assume so.

Kido1986 · 08-31-2014, 03:06 PM

My number 3 was replaced and the car made a noticeable improvement.

Just in time to load it up and haul to Lincoln, where I am now

romin · 09-01-2014, 11:35 PM

The saga continues....

3/13 - I replaced all of my coils with Okadas after my cylinder one factory coil failed with P0351 code.

2/14 I replace my cylinder one Okada coil after getting the P0351 code again.

This weekend, after running on a hot track, the P0315 code popped up again.
9/14 I replaced my cylinder one Okada coil again.

I'm averaging 7 months per coil now on cylinder one.

TimDing · 09-11-2014, 11:02 PM

Put a call in with my local stealership to see if I can get one of each and compare. Will update if I have any luck.

Gords_zenith · 09-12-2014, 01:01 AM

Quote:

Originally Posted by romin

The saga continues....

3/13 - I replaced all of my coils with Okadas after my cylinder one factory coil failed with P0351 code.

2/14 I replace my cylinder one Okada coil after getting the P0351 code again.

This weekend, after running on a hot track, the P0315 code popped up again.
9/14 I replaced my cylinder one Okada coil again.

I'm averaging 7 months per coil now on cylinder one.

This sounds like it could be the plug itself? Have you tried replacing the plug or harness, or at least confirmed the coil was bad by swapping with cylinder 3, or even a buddies car?

sickmint79 · 09-12-2014, 02:44 AM

has the gold tape helped?

celica73 · 09-12-2014, 06:25 AM

Data point

Coil pack #1 lasted for 2.5 track events. Coil pack #2 lasted 1.5 track events.

romin · 09-13-2014, 12:15 AM

Quote:

Originally Posted by Gords_zenith

This sounds like it could be the plug itself? Have you tried replacing the plug or harness, or at least confirmed the coil was bad by swapping with cylinder 3, or even a buddies car?

I swapped the cylinder one plug once already, when my DI seal failed, and the coils continued to fail.
I haven't tried swapping coils across cylinders yet but have kept all of the "bad" ones.

xclusive_brett · 10-02-2014, 06:44 AM

Had P0353 last week and P0351 today... Looks like I will be replacing coils.

40k miles, OFT e85 tune, intake, catless front pipe, exhaust, pulleys

BRZ-One · 10-12-2014, 07:10 PM

I am also experiencing P0351 CEL.

N/A, EcuTek Tune, catless header & midpipe
Tracked the car in June @ Sebring for the 1st time.
On the 4th of 5 sessions the code came up. Cleared it with Ecutek @ the track and ran the 5th session without recreating the code.

Tracked the car again 10/11, after the warm up session it came up once again.
I went ahead and cleared it and it came up every session throughout the day.
The car appeared to be running fine, AFR was in range...

Car has 40k miles & only 2 track events...

From what I'm reading, I think I'm going to try new plugs & a new OE coil...
Probably take a spare with me to the track...

I like the idea of the Aluminum ECU bracket, will probably try that out as well...
I will post my results...

Seeing how the exhaust is only a few inches below these 1 & 3 coils, I'm going to try a pipe shield, found this:

http://www.designengineering.com/cat...um-pipe-shield

I am however concerned about the injector issues, but I haven't encountered any fuel or injector DTC's...

Thanks

F1point4 · 10-12-2014, 09:55 PM

Quote:

Originally Posted by Deep Six

I noticed the part # ends in 651. Most of the discount parts suppliers list the coil with part # ending in 650. Has there been a factory change ?

I still haven't addressed this yet as I have no track time in the short term

and there are no issues with street driving

Quote:

Originally Posted by ATL BRZ

Yes AFAIK the part number has been updated but I don't know if the part has actually been revised or not. I would assume so.

FYI there is a 652 part number now. I've been using a pair in my car for several thousand miles and a pair of track events. Wrapped mine in gold tape.

http://www.ft86club.com/forums/showp...0&postcount=78

08-21-2014, 07:09 AM	#169
trueno86power [\|\|•]=(86)=[•\|\|] Join Date: Jan 2010 Drives: 2017 Toyota 86 Location: Quebec Posts: 963 Thanks: 173 Thanked 488 Times in 218 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	Annnd again an update on my P0351, tracked it yesterday and guess what... Not DTC AT ALL ! So look like swapped the coil and heat protected them "solved" my problem. It's great to make a track session without this damn light on. __________________ trueno86power GR \| TOM'S \| TRD 2017 Toyota 86

09-11-2014, 11:02 PM	#175
TimDing Member Join Date: Aug 2012 Drives: Storm Black Manual 86GTS Location: Melbourne, Australia Posts: 29 Thanks: 0 Thanked 5 Times in 4 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Put a call in with my local stealership to see if I can get one of each and compare. Will update if I have any luck. __________________

10-02-2014, 06:44 AM	#180
xclusive_brett Senior Member Join Date: Jun 2010 Drives: 08 scion xb Location: Los Angeles CA Posts: 396 Thanks: 104 Thanked 184 Times in 107 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	Had P0353 last week and P0351 today... Looks like I will be replacing coils. 40k miles, OFT e85 tune, intake, catless front pipe, exhaust, pulleys __________________

10-12-2014, 07:10 PM	#181
BRZ-One Member Join Date: Aug 2012 Drives: 2013 Subaru BRZ Location: Tampa, FL Posts: 12 Thanks: 1 Thanked 6 Times in 5 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	DTC - PO351 I am also experiencing P0351 CEL. N/A, EcuTek Tune, catless header & midpipe Tracked the car in June @ Sebring for the 1st time. On the 4th of 5 sessions the code came up. Cleared it with Ecutek @ the track and ran the 5th session without recreating the code. Tracked the car again 10/11, after the warm up session it came up once again. I went ahead and cleared it and it came up every session throughout the day. The car appeared to be running fine, AFR was in range... Car has 40k miles & only 2 track events... From what I'm reading, I think I'm going to try new plugs & a new OE coil... Probably take a spare with me to the track... I like the idea of the Aluminum ECU bracket, will probably try that out as well... I will post my results... Seeing how the exhaust is only a few inches below these 1 & 3 coils, I'm going to try a pipe shield, found this: http://www.designengineering.com/cat...um-pipe-shield I am however concerned about the injector issues, but I haven't encountered any fuel or injector DTC's... Thanks Last edited by BRZ-One; 10-14-2014 at 05:05 PM. Reason: adding info..

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09-01-2014, 11:35 PM	#174
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)	The saga continues.... 3/13 - I replaced all of my coils with Okadas after my cylinder one factory coil failed with P0351 code. 2/14 I replace my cylinder one Okada coil after getting the P0351 code again. This weekend, after running on a hot track, the P0315 code popped up again. 9/14 I replaced my cylinder one Okada coil again. I'm averaging 7 months per coil now on cylinder one.

09-12-2014, 02:44 AM	#177
sickmint79 Senior Member Join Date: Feb 2012 Drives: bmw Location: grayslake, il Posts: 393 Thanks: 16 Thanked 142 Times in 84 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	has the gold tape helped?

09-12-2014, 06:25 AM	#178
celica73 Senior Member Join Date: Jun 2012 Drives: '13 BRZ / '11 Outback / '06 Tundra Location: Durham NC Posts: 510 Thanks: 6 Thanked 155 Times in 104 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Data point Coil pack #1 lasted for 2.5 track events. Coil pack #2 lasted 1.5 track events.

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