Code 15 diagnostic
Thread Starter
Joined: Jan 2007
Posts: 976
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From: Newfoundland, Canada
Car: 1991 Pontiac Trans Am GTA
Engine: V8 305
Transmission: Automatic Transmission
Code 15 diagnostic
Code 15 appeared on my 91 <GTA. I already changed the cooling sensor, did I miss something?.
Thread Starter
Joined: Jan 2007
Posts: 976
Likes: 4
From: Newfoundland, Canada
Car: 1991 Pontiac Trans Am GTA
Engine: V8 305
Transmission: Automatic Transmission
Moderator
Joined: Jan 2000
Posts: 19,664
Likes: 313
Re: Code 15 diagnostic
A "15" error code indicates an open CTS circuit for more than 3 seconds. That could be a lot of connections, and could contribute to a difficult start if the system is adding a lot of cold start fuel, even along the Atlantic shore.
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