P0606 code

Google the code.

GuruWM5V6, I can't thank you enough for the recommendation to change the spark plugs. I had been looking for some online help for a few weeks for a similar issue I was having with my 2007 Honda Civic Hybrid. This car has 185k miles. I've never had an issue with this care, but over the past month, whenever I would quickly accelerate past 3,500RPM, the gas pedal would stop responding, the RPM temporarily rose to 4,000RPM, and then the RPM would fall back to idle and the car would roll to a stop. If I put the car in park and then back into drive, the car would be in limp mode and go no faster than 10mph. If I shut the car off, it would work normal again unless I again crossed 3,500RPM. I thought I had a transmission slipping. The check engine light came on with the error code P0606 (ECM). I took it to a Honda dealership who after a $125 diagnostic fee just told me to replace the computer for $1600. The answer was basically "well, it's a computer problem, there is nothing you can do except try to replace the computer". I decided to hold off. I found this message board and the mention about bad spark plugs sending some kind of shut down to the computer. I'll admit that I purchased the car with 40k miles and never changed the spark plugs, so they were definitely needing replaced either way at 185k miles. I've never had any codes from the computer suggesting misfires or symptoms of bad plugs except it being a little jerky during initial acceleration. Anyway, I replaced the 8 spark plugs myself for about $70. I'm now 2 weeks after replacement, I've challenged the acceleration up to 5,000RPM multiple times, and I can no longer reproduce the "computer failure". Thanks for saving me some money and headaches! I'm curious to hear if anyone else has the same problem. I really struggled to find an answer online.

tenho o mesmo problema no meu civic 2008 ja foi substuiudo o modulo eo codigo p0606 voltou depois de 1 mes

Guru8YKBD pudiste solucionar tu problema?

I replaced the spark plugs on my 08 civic and used the cheaper plugs bought online ( looked like originals ). went through the same situation as GuruK 831p except I replaced computer and same problem happened , so I replaced all the spark plugs to honda original plugs and has been fine since. The online plugs lasted no time, electrode was burnt away ,never got 15k out of plugs. I would of never thought that a 606 code would be thrown because of a spark plug issue. Check or replace plugs and buy from honda

Tengo el dia completo con el mismo fallo mañana probare con otras bujias a ver si resuelvo, le probe dos pcm y aun lo mismo y revise los voltajes mañana vere si cambiando las bujias se pone bien

Saludo yanuel pudiste solucionar el problema me esta pasando lo mismo

Bonjour merci beaucoup pour vous tous j'ai le même problème sur une honda crv 2008 essence code défaut P0606 j'ai changé seulement les bougies et le problème est résolu merci encore

This was really helpful. So my issue was the same, I got the same PO606 code on my 09 Honda Civic with 245k miles on it. I am a former ASE Honda tech and based on my experience I've never had to replace an ECU on a Honda before 10Years in the dealership and never swapped one. In my case my wife's car was jerking a little bit around 45 to 55 but i though it was the fuel pump sense i was 10Lbs below specs. but out of no were this code popped up, but i never thought of looking at the plugs because i had just replaced them 20k miles ago. but i did look at the Coil packs and 3 out of the 4 had a burnt smell to them and the tip was Yellowish. So i decided to replace the coil pack and to y luck the same code came back. So i ended up replacing the ECU. Found a shop in Colorado that would do it for 400 bucks programing and everything. (Module Mechanics), put the scanner on and no issues. Wife drove off, and 10Min latter i get a call that the car is doing the same thing... HERE WE GO AGAIN!! went put the scanner on and same error code PO606. I got home and i went into All Data and found a service bulletin saying to replace the coil pack every 100k to 120K miles with OEM ones. and another service bulleting saying that not replacing Coil packs could deteriorate the plug. SOOOO, here I go again, removing the coils. Guess What!!! the plugs were completely SHOTTTTT the gap was around .080, they were completely destroyed. Replaced the plugs and re installed the new coil pack again and haven't had any issues sense then. A bad Coil plug can output more than the necessary Voltage and the ECU will try to compensate but over time the coil pack will destroy that Plug. What i learned from this is to go back to basics and to not over think things. If i would removed a plugs i would've saved 400 bucks. so guys dont over think things.

Experienced the same issues with P0606 as everyone in this thread. Replaced spark plugs and ignition coils with genuine parts (don't bother with aftermarket) also had the throttle cleaned and everything runs so much smoother now. 99% sure this was the Root cause but time will tell. This code appears to occur in the 06-09 year range, which means your car probably has at least 160-180k miles on it, if so and you're still driving with the original ignition coils, it's time to replace them. I was driving with my original coils till 205k (oops lol) The whole time I never bothered to check them because I just added new spark plugs in that had only 20,000 miles on it and thought no way those could be bad, but the faulty ignition coils completely fried the plugs faster. I now have smooth acceleration!!! 08 civic