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What does this error code mean?

1258 Views 2 Replies 3 Participants Last post by  darksky47, 
H
I want to know what this error code means:

P1511 Throttle Control System- Backup System Performance

Thanks in advance.
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R-Caddy
What year is the car? My 97 manual does not list that code.
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D
I have the same code P1511 on my 2001 catera i have no idea how to fix it.
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