How can a code 315 crank position not learned be fixed, will the computer learn it eventually or what?

 

How can this problem be remedied?

 

goto the dealer, or buy HPTuners.
im willing to bet you had your computer flashed
after sending it somewhere.

 

You need the dealer's scan tool to set the variation learn bit then perform the learn procedure which goes like this. Maybe HP Tuners can also do this.

With a scan tool, select the CKP system variation learn procedure and perform the following:

1. Observe the fuel cut-off for the applicable engine.
2. Block the drive wheels.
3. Set the parking brake.
4. Place the vehicle's transmission in Park or Neutral.
5. Turn the air conditioning (A/C) OFF.
6. Cycle the ignition from OFF to ON.
7. Apply and hold the brake pedal for the duration of the procedure.
8. Start and idle the engine.
9. Accelerate to wide open throttle (WOT).
10. Release the throttle when fuel cut-off occurs (making sure it occurs at the correct RPM).

11. Idle engine for 30 seconds after a successful learn then shut off.

 

yeah, dealer wants to charge me 86 dollars!!! I dont think hp tuners would work since the pcm is locked. Dealer siad it wont go away on its own.

 

yeah its hahn tuned and shipped, dealer wants $86 bucks to do this which sux after paying so much for a tune. will the dealer be able to fix this on a hahn locked pcm?

 

Hptuners won't do it on later ETC vehicles. It will always say TPS too high.

The SS/SC might allow it to be done, but I don't think it will work on a 2.4. Going to have to be done by a dealer to the best of my knowledge.

 

Actually it may go away on it's own, I'm had it happen before, the conditions need to be right though for it to happen what myosh said is correct if you have the scan tool it will do it will learn it right away. With the mods you got going on I'm not sure how long it would take for the conditions to be right, I would disconnect the battery for about half and hour and then hook it back up after the capacitors have all drained and see if that eliminates you cel and makes it do an crank learn. Do it with a warm engine cause the crank learn will not happen unless it's close to operating temp.

 

Maybe, according to the HPT guys, it won't work on an LS2 or any other late model ETC equipped vehicle. It may work with the SS/SC but it might not with the 32 bit pcms.

 

go to the dealer takes 20 seconds to relearn crankshaft position sensor

 

I'm sure the dealer is right about it not going away on it's own since the PCM will probably never set the learn bit by itself right before you happen to goto WOT to redline!

$86 dollars is a silly high price. I would talk to some other dealers. If they also quote high prices explain to them that you have a general understanding of the procedure and that if they want your money they are going to have to be more reasonable.

 

I hour is the standard fee they will charge, it's the checkout fee, and if it's just a realearn it will end at that, but it could be a bad sensor or a faulty wire as well, he may have an actual problem cause technacily they should not unlearn themselves unless there is a problem.

 

Its a swapped PCM. It will definetly not learn on its own.

Until its done, you may have timing issues.

 

dealer said they can do it tomorrow. will it hurt the car to drive it with this code to the dealer?

well, im heading out to the dealer, they said keep the rpms low and it shouldnt hurt the car, hopefully be done by tomorrow now.

 

Just got the pcm's back from tuning today and when they got put back in the car it came up with a CEL Code 315 "Crank Position not Learned". I really need to get my car back on the road today and I was hoping for some help on this code and how to fix it. I was thinking since this is a learning computer that if i drove it around today that it might learn the crank position. Am I wrong in thinking that? Any help will be highly appreciated as I have been trying to get this on the road running right since April.

well, im heading out to the dealer, they said keep the rpms low and it shouldnt hurt the car, hopefully be done by tomorrow now.

 

well, im heading out to the dealer, they said keep the rpms low and it shouldnt hurt the car, hopefully be done by tomorrow now.

 

Do you really need 3 threads on the samething?

 

get used to the issues im sure they are far from over....

btw my car's crank sensor was off, just found out now that the motor is getting rebuilt they are going to fix it while they have it...

 

If the PCM is swapped you will get this fault. That standard fee stuff is crap. A good dealer will take care of you for a reasonable price if you are paying out of your pocket. Think about it, if you were them would you rather make some money or none at all and give the business away???

 

I used to be a tech, and we didn't get paid enough for what we did, I'm not saying this is hard to do but you start doing it for one person you will end up having to do a lot of freebe's for everyone. Techs get paid by the labor hours they turn not by the actual work hour by the dealership, And since he swapped out the pcm it was of his own doing, gotta pay to play. The tool ain't cheap, I paid 1500 for mine used and techs have to pay for their own tools, yeah a dealership will have one scan tool maybe two but that is for all the techs to use. Have to spend the time waiting to use it and stuff. I would remain a tech if it was like the good old days, you deal only with the tech instead of having to pay the worthless service advisors and everyone down the line. I would be like 10 bucks in my pocket and we are straight. My best advise for someone modifying a car is to have someone in a dealership that can hook you up. Especially now needed all the special equipment for almost everything.

 

You need to do the relearn procedure. You need a tech two and a candi module. Take it to the dealer and have them do it, its quick.

 

the car is at the dealer now till tomorrow, hopefully the dyno time will still be there tomorrow night. sorry about too many threads but i needed an answer quick on what to do so my car wasnt down for much longer.

 

GL man.....

I really hope u thought the turbo thing through b/c u will probably be seeing alot of down time and if that doesnt work for you then u may want to think about doing something else until the turbo 2.4 has been out for a bit.

 

well the dealer seems cool, hopefully they dont rape me too bad on the price, i did like that they said theve done this before on mail order tunes, i was just comepletly surprised that i wasnt made aware this could happen.

 

well, i feel like this will be a reliable setup once i work this last bug out.