MBC Racing

I am still getting a 0201 code. I can clear the code and around 600 miles later it will pop the check engine light back on. I looked it up and there are NONE of the companion codes with it. Just 0201.

My car is a bone stock 96 maxima with 134k on it. It does have a recent set of plugs. Anybody else see this or have any suggestions for me? Somone mentioned checking the coil packs, but I was not able to locate the procedure.

Thanks

njmodi

iTrader: (4)

1. Did you use NGK plugs?

2. 0201 = P1320 = Ignition failure... this is typically due to one or more bad ignition coils. Most members have just replaced all 6 (both here in the 4th Gen forum and the 5th Gen forum) when this code has appeared. It may also be a bad injector - but you would definitely notice a driveability issue with a bad injector.

3. Sometimes coil-packs ohm-out ok cold but fail under load - which is why it may be best to replace all 6. You can do the work yourself - they are very easy to replace and can buy all 6 for about 300 bucks from a variety of OEM parts sources, e.g. courtesyparts.com, jrnissanparts.com, etc.

MBC Racing

1. Yes I used the $10 each NGK plugs from the dealer.
2. The car drives and idles great. I got 27 mpg on the highway on my last trip. I ran two bottles of injector cleaner through it also.
3. Replacing the coil packs should be the same as doing plugs, but I would just leave the plugs in. I really don't want to spend $300 to replace them right now when the car is running so well. When I clear the code, it takes hundreds of miles for it to come back. That is the part that is confusing me.

Where is the coil pack checking procedure located?

Thanks
Brad

njmodi

iTrader: (4)

Good info...looks like you're on top of it.

I don't know if there is an actual how-to on checking the coils... I don't have my Haynes or FSM handy - I'm sure someone else will be able to help you out. You need to measure the resistance of each coil - but I don't remember what range of values is acceptable.

MBC Racing

Ok. Thanks
Hopefully someone will chime in and have a link for the procedure. I just need to know what pins and what range.
Brad

PLUMMAXSE

iTrader: (2)

OK. When you remove the coil lay it down with the plug side to your right, pins facing up. The pins are numbered 1,2 and 3 from right to left. With an ohm meter connect the postive+ to pin 1 and the negative - to pin 2. You should read infinite resistance. Then reverse the leads and you shoul read continuity but not zero ohms.
Also connect an ohmmeter between the spark plug connection and terminal 1, you should read infinite resistance. If any of these are different, replace the coil. From the haynes manual p. 5-8.

MBC Racing

Thank You!!!

I will print this out. I also need to get a haynes manual.

Brad

njmodi

iTrader: (4)

Hey PLUMMAXSE - is that coil testing procedure in the stickies - if not - it needs to be... the question comes up several times a week...

MBC Racing

I heard it was, but couldn't find it when I was looking.
Brad