Has anyone resolved their ignition coil CEL issues? (P0351, P0352, etc.)

[zc06_kisstherain]

Originally Posted by sickmint79

1. question on this, i'm out of warranty and never been in for a TSB. can i just come in and wave my hands around and get this done for free?

2. is this really about our issue? the description doesn't seem like it? or at least is pointing to the camshaft sensor

Scion: camshaft position sensor clearance is out of specification, causing intake and/or exhaust camshaft position sensor and/or engine to misfire and some vehicles may experience rough idle or extended cranking. model 2013 fr-s.

TSB is not recall. so you probably cannot get replacement by warranty.
just give it a shot. nothing to lose but time. likely they won't do anything if your car does not have any issue

[whataboutbob]

Originally Posted by strat61caster

Awesome, I got two more codes at my last track day, do you know if it's entirely the harness or if there's some element to do with the coilpacks failing as well, maybe in conjunction with the harness?

I may order this instead of 2x coilpacks for my next track day, especially if anyone else can confirm.

Mine has never shown itself on the street so I'd be surprised if a dealership is willing to help me out, but I may make the effort once again...

Not sure, I'm still getting P0302 after doing another revised coil pack and plug. I'm going to be looking at the main harness connector next on top of the motor.

[whataboutbob]

disconnected main harness connectors on top rear of motor and used electrical contact cleaner on both ends of each connector. No more CELs at this point, but still getting lots of misfires. Cyl 4 still has the oem original coil. 1-3 have revised coil packs. Going to order a new coil for 4 and see what happens with the misfires.

Note, this is NOT tune related. I've run these tunes for a while without issue.

[wheelhaus]

I have also just started getting P0351 at the local track and it seems to happen at the end of the session. Engine runs and feels fine, but the code has come up twice, once for each of the first and second sessions. Engine is completely stock, and the car is one of the early production models (delivered in 2012), besides crickets this is the first issue that's come up.

Sounds like it's not uncommon, and it's just due to the coil packs themselves going bad. I don't mind throwing some money at parts to fix it myself, so if anyone has 100% resolved this please lend some insight!

[ravisraval]

Oil cooler

[Estey]

Originally Posted by wheelhaus

I have also just started getting P0351 at the local track and it seems to happen at the end of the session. Engine runs and feels fine, but the code has come up twice, once for each of the first and second sessions. Engine is completely stock, and the car is one of the early production models (delivered in 2012), besides crickets this is the first issue that's come up.

Sounds like it's not uncommon, and it's just due to the coil packs themselves going bad. I don't mind throwing some money at parts to fix it myself, so if anyone has 100% resolved this please lend some insight!

My car was also delivered in 2012, and a failed ignition coil is the only issue Ive had. I replaced it myself with an oem ignition coil around 40k in 20 minutes, and I am now past 70k with no issues thus far.

[sickmint79]

Originally Posted by wheelhaus

I have also just started getting P0351 at the local track and it seems to happen at the end of the session. Engine runs and feels fine, but the code has come up twice, once for each of the first and second sessions. Engine is completely stock, and the car is one of the early production models (delivered in 2012), besides crickets this is the first issue that's come up.

Sounds like it's not uncommon, and it's just due to the coil packs themselves going bad. I don't mind throwing some money at parts to fix it myself, so if anyone has 100% resolved this please lend some insight!

i would say there is no 100% resolution determined yet.

[wheelhaus]

Ok, I just poked through the other mini threadzilla talking about the similar/same issue, coil packs, misfires etc. Consensus appears that replacing the coil packs is the only solution, even if the problem creeps up again. Silver lining is that it's an easy fix and not indicative of pending doom or anything.

[driftartist]

i converted my car to a gear driven distributor with a cap/ rotor and plug wire setup. works now. little more ohm resistance than when i had the coil packs but hey it got rid of the cel.

[whataboutbob]

So we swapped in the replacement motor and didn't change any electronics and the car is running fine now. Suspect one or more burned exhaust valves but have yet to tear down the old motor to verify.

[Apoc]

Originally Posted by driftartist

i converted my car to a gear driven distributor with a cap/ rotor and plug wire setup. works now. little more ohm resistance than when i had the coil packs but hey it got rid of the cel.

I'm having a hard time believing this. Please post some pics.

[driftartist]

Originally Posted by Apoc

I'm having a hard time believing this. Please post some pics.

oh no i was just being sarcastic lol sorry man.

[ATL BRZ]

Originally Posted by whataboutbob

Part number SU003-04463, $375 retail at the Toyota dealer. This is a revised part number. There is a TSB for issues with the harness on the early year model cars: TSB-S_SB_0013-14. Which apparently references random misfires and stalling among other things.

Do you or anyone else have the actual TSB available to share? I wanna read it.

EDIT: Found it. Doesn't seem to mention anything about the wiring harness.

The TSB does mention misfire DTCs but it looks to be just an updated TSB about the old wandering idle issue which was related to cam sensor/sprockets and early ECU calibrations which was mostly all fixed and I haven't seen the issue persist since.

[raul]

Originally Posted by whataboutbob

Part number SU003-04463, $375 retail at the Toyota dealer. This is a revised part number. There is a TSB for issues with the harness on the early year model cars: TSB-S_SB_0013-14. Which apparently references random misfires and stalling among other things.

A few of us have been digging and found the TSB you mentioned (posted above), but there's nothing in there about the harness. It's not referenced in any way, image or part number. Are we missing something?

@ATL BRZ