Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Code P1561, Cruise Vent Solenoid: Notes
Cruise switch within turn signal lever receives ignition voltage from a 15-amp fuse to turn signal lever cruise switches. Cruise ON/OFF, SET/COAST and RESUME/ACCEL switches are inputs to cruise portion of control module.
Cruise servo vent and vacuum solenoids output are controlled by high side drivers in control module. When ignition is on, control module looks at these output lines and will set codes if an incorrect status is seen on any line.
Vent solenoid is a normally open (de-energized) solenoid valve that allows vacuum in cruise servo to be depleted. When solenoid is on (energized), cruise servo holds vacuum allowing servo to remain retracted and hold throttle open.
When Code P1561 is set, control module will not allow cruise control operation. P1561 does not illuminate Malfunction Indicator Light (MIL).
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.