Trouble code: P1502 - Any thoughts?
Trouble code: P1502 - Any thoughts? Friday night i took my buddy for a ride in my car.... we came back, & backed the car in the garage and shut it off... then on saturday night, i got in the car, tried to start it, and it won't even try... I didn't touch the car since I took him for a ride...
I checked the DTC's with HP Tuners and its throwing code "P1502 - Theft Deterrent Fuel Enable Signal Not Recieved" ...
Anyone have thoughts or know what causes this? I tried my other key, and no luck...
My only thought was to tune out that DTC and have the car ignore it, but i don't wanna do that if its going to cause any other problems...
Possibly related to the headlight issue i posted about the other day??... I havent fixed that yet, but atleast i know how to fix it now! https://ls1tech.com/forums/wiring-stereo-electronics/860271-electronics-flipping-out.html
Thanks!
I checked the DTC's with HP Tuners and its throwing code "P1502 - Theft Deterrent Fuel Enable Signal Not Recieved" ...
Anyone have thoughts or know what causes this? I tried my other key, and no luck...
My only thought was to tune out that DTC and have the car ignore it, but i don't wanna do that if its going to cause any other problems...
Possibly related to the headlight issue i posted about the other day??... I havent fixed that yet, but atleast i know how to fix it now! https://ls1tech.com/forums/wiring-stereo-electronics/860271-electronics-flipping-out.html
Thanks!
Electrical and wiring is one place i'm lost
Just clean your key real good first on those metal contacts. and try it again. If that dont fix it then you probably just have a broken wire in the key cly that has a bad contact. You can just take the car to a remote car starter installation center and they can bypass the BCM module INPUT with a resister set accross the 2 wires. Then you dont need to tear the steering column apart.
Just clean your key real good first on those metal contacts. and try it again. If that dont fix it then you probably just have a broken wire in the key cly that has a bad contact. You can just take the car to a remote car starter installation center and they can bypass the BCM module INPUT with a resister set accross the 2 wires. Then you dont need to tear the steering column apart.
Any other suggestions or thoughts out there?
TECH Senior Member
Joined: Dec 2001
Posts: 5,399
Likes: 3
From: Jacksonville, FL
Well I thumbed through my '01 helms and couldn't find P1502? Went to obdii.com and plugged it in and the description is correct, but lists it for the V-Body only? Maybe I'm missing something. Anyway, I'd measure the resistance on the key pelet then unplug the connector under the dash and see if the resistance value is the same to see if a wire in the cyl is broken. http://shbox.com/1/vats_bypass.jpg
Well, i just remember that being the exact description it gives... I didnt have time to hook up my laptop this morning before work, so I didnt get the exact code #... when i went to the OBDII site and searched for the description that i remembered it reading out, that's the code that it showed, so i just assumed it was the same code.... maybe its a different code, but that's the exact description that the computer gave me...
my bad...... :-/
my bad...... :-/
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo TECH Senior Member
Joined: Dec 2001
Posts: 5,399
Likes: 3
From: Jacksonville, FL
Yeah it's pretty much the same thing, just guessing on the code though - could be something else. P1626 is theft deterrent fuel enable signal lost. You can still use that diagram to check the key cyl.
I guess i'm confused on one thing... If the cylinder is bad, the signal won't be flowing through the key correctly (or at all i guess), and then i won't be getting any resistance right? (maybe infinite resistance?)
Anyway, I'd measure the resistance on the key pelet then unplug the connector under the dash and see if the resistance value is the same to see if a wire in the cyl is broken. http://shbox.com/1/vats_bypass.jpg
TECH Senior Member
Joined: Dec 2001
Posts: 5,399
Likes: 3
From: Jacksonville, FL
Not sure on what the exact reading will be if one wire is broken, one or both wires just barely touching something, etc. The way I understand it the BCM is looking for the "nomimal" resistance of the key pellet - so if you check it on the cyl side of the connector and it doesn't match that means the problem is between that side of the connector and the key.
Not sure on what the exact reading will be if one wire is broken, one or both wires just barely touching something, etc. The way I understand it the BCM is looking for the "nomimal" resistance of the key pellet - so if you check it on the cyl side of the connector and it doesn't match that means the problem is between that side of the connector and the key.
