code 15- engine coolant temp sensor
Thread Starter
Melting Slicks
Joined: Jul 2004
Posts: 3,277
Likes: 32
From: Mission Viejo California
code 15- engine coolant temp sensor
Well I thought I would have gotten rid of the datamaster dtc err....
I previously broke the coolant sensor when trying to do a pulley change. I replaced it and now it registers but still gives me a dtc error, citing #15. I replaced it with a borg warner sensor from pep boys. The coolant temps look to be correct(on the datamaster screen) yet it's still giving me the error code. What gives?
I previously broke the coolant sensor when trying to do a pulley change. I replaced it and now it registers but still gives me a dtc error, citing #15. I replaced it with a borg warner sensor from pep boys. The coolant temps look to be correct(on the datamaster screen) yet it's still giving me the error code. What gives?
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
Did you clear it?
15 usually means the signal or ground wire is open. Check the wiring by jumpering the harness terminals to see if it generates a 14. If not, check for 5 volts on the signal wire and check ground for an open. If you don't get the 5 volts, check for it at the ECM to confirm or rule out the wire. If it isn't at the ECM, you'll need a new ECM. Ground for most years is shared with the TPS and MAT, so if you don't have those codes, you only need to follow it back through the harness to the splice.
15 usually means the signal or ground wire is open. Check the wiring by jumpering the harness terminals to see if it generates a 14. If not, check for 5 volts on the signal wire and check ground for an open. If you don't get the 5 volts, check for it at the ECM to confirm or rule out the wire. If it isn't at the ECM, you'll need a new ECM. Ground for most years is shared with the TPS and MAT, so if you don't have those codes, you only need to follow it back through the harness to the splice.
Thread Starter
Melting Slicks
Joined: Jul 2004
Posts: 3,277
Likes: 32
From: Mission Viejo California
Clear it? I don't even know what that means. This is my first time running datamaster and my first problem with the car.
I'll check it for 5 volts next Saturday. 15 is the only code I'm getting right now. Everything else is green on the datamaster program.
I'll check it for 5 volts next Saturday. 15 is the only code I'm getting right now. Everything else is green on the datamaster program.
Drifting
Joined: May 2003
Posts: 1,730
Likes: 1
From: Charlotte NC
St. Jude Donor '05
Sounds like you need to clear the codes.
Datamaster will do this for you, although a bit crudely if you turn the key on, engine off and click Clean malf. in the Start stop monitor box
or you can pull the ECU fuse
Datamaster will do this for you, although a bit crudely if you turn the key on, engine off and click Clean malf. in the Start stop monitor box
or you can pull the ECU fuse
Thread Starter
Melting Slicks
Joined: Jul 2004
Posts: 3,277
Likes: 32
From: Mission Viejo California
update... the funny thing is when the sensor was not connected at all, the car would cold start fine and then run rich once it was hot because the sensor was reading about 30 some degrees. Now that it's fixed, the car starts like crap when cold (how cold could it be here in CA where it's 80* in the morning) and runs fine afterward once hot. When started cold now it idles really low and feels like it's not running on all 8 cylinders. This is so wierd....
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