simple

DTC, ignition related, where too start looking?

CamaroSS30thAnn

P1351 Ignition Coil Control Circuit High Voltage (GM)

not sure what that means but it seems to have somthing to do with ur coil

shoebox

Check the wiring to the ICM or maybe the ICM is going bad.

simple

any possibility that this code could be from a rich condition?
because i also thru 3 O2 codes as well p0153, p0154, p0155 (but the O2's are getting deleted with tuning next week so i'm not worried about dealing with them)

shoebox

Not sure how a rich condition could cause an electrical fault to the ICM.

Injuneer

All three of the O2 codes are for B2S1.... slow response, no activity, and heater circuit. Has nothing to do with "a rich condition". That's a faulty sensor or a wiring problem.... not sure how they're "getting deleted with a tune"???

P1351 sets when the PCM detects an open IC control circuit. You have a problem on that circuit somewhere between the PCM and the ICM.

simple

well, i changed injectors from 30's too 36's and didnt run the car for a while because the pcm hasnt been adjusted for the larger injectors yet (but i needed a vehicle one day and then the codes came on shortly after)
anyway, these codes popped up only after i changed out the injectors
i was wondering since the car was running rich before and now the larger injectors are in there possibly making it run using even more fuel then needed

i was wondering about the misfire code being from a rich condition from the injectors at the spark plugs. guess not

the O2's will not be in use anymore after wed. nor will the maf or KS, according too my tuner, with this being more of a track car (more so then street anyway) he prefers too tune without them in use. he knows more on that subject then i do as far as "deleting" and tuning with out them.

what is an IC control circuit? could you elaborate a little more for me?

Injuneer

ICM = Ignition Control Module. That's where the signal from the PCM goes, that tells the coil its time to fire.

http://shbox.com/1/coil_loc.jpg

Again, a rich condition would set P0172 or P0175 or both.

If you're [pouring 20% extra fuel into the engine, in addition to running the risk of washing down the cylinder walls, thinning out the oil and doing some serious damage, maybe you've coated the sensors so bad they don't work any more.

simple

ok, i thought the IC circuit was something different

could this code be an intermittent thing? or from loose connections or the like?

and i think all the O2 codes are from the car running rich (i wont be driving it anymore until we get the fueling issue taken care of)

Injuneer

If you're still convinced the O2 sensor codes are from a rich condition, why did you ask in the first place? Apparently you don't believe what I'm telling you, so I'll back off.

simple

so, in essence it would be from a rich condition if i'm thinning out the oil and its being burned thru the exhaust coating the O2's and causing them not too work.......does that sound really far fetched?
maybe its running rich but not running rich enuf too throw the codes you mentioned but still causing the above mentioned? could be from bad ring sealing?
if that isnt a possibility, what could be coating the sensors so bad that they arent working zanymore since they were before the injector swap?
isnt a by product of rich fueling, "black soot"...is it not possible that that "black soot" could have coated the O2's enuf too the point of death?

i'm just trying too ask questions that relate too the last thing i had done too the car after i last drove it that could possibly in one way or another cause or be a cause too the O2 problem!

no need to back off