garajizOBD-II code · manufacturer-specific
P1661
IAC Monitor Disabled by PSP Switch Failed On
- System
- P1 — Powertrain (manufacturer-specific)
- Severity
- Moderate (3/5)
- Can I keep driving?
- Drive with caution
What does P1661 mean?
P1661 is defined as “IAC Monitor Disabled by PSP Switch Failed On”.
Drive gently and only as far as you need to; have it checked as soon as possible.
Manufacturer-specific meanings
The same code can mean something different on some makes.
- Toyota: EGR Circuit
- Buick, Cadillac, Chevrolet, GM, GMC, Oldsmobile, Saturn: MIL Control Circuit
- Ford, Lincoln, Mercury: Output Circuit Check Signal Low
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This page is general information; an exact diagnosis needs measurements and a technician’s check.