Misfire and/or Check Engine Light Due to Failed Ignition Coil on Toyota Camry

On higher mileage vehicles, an engine misfire may develop and/or the Check Engine Light may illuminate due to a failed ignition coil. It is not uncommon to replace all the coils when the first one fails in order to prevent return trips to the repair shop.

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Average mileage: 134,170 (13,300–215,000)
10 model years affected: 1997, 1998, 1999, 2000, more2001, 2002, 2003, 2006, 2007, 2008
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problem details
2003 Toyota Camry 144,000 mi,
Check enging light started flashing, car started to shake just a little as if it was going to shut down. Smoke coming out the tail pipe, and won't pick up speed.
Misfire in cylinder 2 & 3 causing p0302 p0303 also a random misfire p0300 I do have high mileage 187k
1999 Toyota Camry 198,000 mi,
My car started to shake and the check engine light comes on and off what can be the problem I took it to a mechanic and he put it on a computer the computer says misfire on a number 3 spark plug
I have had all the ignition coils replaced twice and some three times in the last two years and am continuing to still have problems. The check engine light will come on and it will die without notice or will run rough. Each time is taken to the mechanic it is the ignition coils and usually only one cylinder each time.
Do not pay a mechanic to replace these coils, it is two nuts and one bolt to do it yourself. Remove the plastic cover over your engine block (where you put oil in the engine, it is two 10 mm nuts), underneath you will find your coils, either four or six depending on whether or not your engine is 4 or 6 cylinder. The bolt in the coil is 10 mm also, as you look at the coils they are numbered from left to right, #1 coil is all the way left if you are facing the engine. Unplug the wire harness from the back of the coil, pull up on it and it pops right out (your spark plugs are underneath it FYI if you want to change those yourself also, one plug under each coil). So with a 10 mm wrench, about $100 for the part and 5 minutes of your time you can do this yourself. Sorry to all of those that were fleeced by mechanics. $300...sheesh!
1998 Toyota Camry 150,000 mi,
First The check engine light...then it started to lose power..now it doesn't even want to move it goes really slow... Many other cars have the same problem but people don't look for solutions online
2007 Toyota Camry 75,000 mi,
So far I've had 2 coils replaced and now it's only about 2 months later I'm getting another reading that another coil has failed. Never had this problem with any of the other cars I've ever owned for over 30 yrs. Back to the dealership tomorrow and feel they should fix this problem once and for all at their expense. If these coils are defective, then Toyota should foot the bill!
2003 Toyota Camry 13,300 mi,
REPLACE ONE COIL AND TWO WEEKS LATER ANOTHER ONE FAILED. REPLACE THE REST OF THE COILS AND ITS ALL GOOD NOW
2002 Toyota Camry 167,000 mi,
Car started to skip and use alot of gas, diagnosis check revealed it needed ignition coil replaced and mass air flow sensor. Solved some of the skipping, but has not really fix the problem.
2007 Toyota Camry 125,000 mi,
I have had multiple failures of the ignition coils since I've owned this car brand new in 2006.
1998 Toyota Camry 55,000 mi,
The car had previously been serviced 3000 miles before, and this is second time the check engine light went on. The OBO device showed the code problem as P0300, P0302, P0303. The car is not driven that much, so it was suspected that maybe the gas in the car was gummy, or caused internal parts to be clogged. Previously, the spark plugs had been replaced, as well as the spark plug wires.(@ 3000 miles ago) Mechanic indicated that upon removal of the sparkplugs, cylinder # 3 spark plug was dirty and burned and ignition coil looked bad. This is after 3000 miles of driving. So he recommended replacement of the ignition coil. I do have to say that the car is 15 years old, so at that age, I can see that a lot of the car's parts are beginning to fail as they probably have a lot of dirt on them, and if they are plastic, probably the age and heat in the car is means they crack etc.
1998 Toyota Camry 155,000 mi,
Drove car last nite perfect today engine started shaking the motor and exhaust
2008 Toyota Camry 129,000 mi,
First trip to mechanic had all spark plugs and one front ignition coil replaced. 2nd trip to mechanic, another front ignition coil replaced. This morning the check engine came on and same idling issues, I know it's another coil issue. Is it recommended to just have them replace all the older coils at this point? Or just wait for them to blow one by one?
2007 Toyota Camry 120,000 mi,
This is my third trip to the dealer to replace an engine coil. I was unaware that this is a problem with the 07 Camrys. I have an 02 camry and never had to replace a engine coil.
2002 Toyota Camry 167,000 mi,
All of a sudden lots of vibration. Thought it was the road at first but then started losing power. Made it home and to repair shop but it felt very wrong to drive it like this. Replaced just the bad coil. $300
1997 Toyota Camry 80,000 mi,
3 bad coils
2001 Toyota Camry 178,000 mi,
fire code P0300, P0302, P0303
2008 Toyota Camry 180,000 mi,
Bought coil and thinking should U replace all of them, 100 a piece?
This has happened twice now and I am getting ready to pay the mechanic a THIRD TIME to repair the back coils that are "hidden". They have to take the car manifold out to replace them. Very very poor design on Toyota's part and I can honestly say makes me not want to buy a Toyota again. Prior times we only replaced the damaged coil but this time I will replace all three of the back ones in the hopes that solves the problem.
2007 Toyota Camry 154,000 mi,
Replaced all coils with off market onces, then one went bad again. Come to find out my Camry only takes the coils from the dealership. Fixed all 4 now I have no problem with it & they are under warrenty