Cruise Control Switch 'A' Circuit Open
The cruise control switch circuit has an open or broken connection.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
There's a problem with the electrical connection of the cruise control switch, so the system can't tell if you want to set the cruise control or not.
What the computer is actually seeing
The engine control module (ECM) expects a voltage signal from the cruise control switch that indicates the driver's intent to engage cruise control. When the circuit is open, it sees no signal—meaning the switch isn't functioning as expected.
What a healthy reading looks like
The cruise control switch should send a signal voltage between 0.5V to 5V when activated.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Inspect the wiring and connectors for damage, fraying, or corrosion. Repair or replace as necessary. Decision Point: Is the wiring intact? (Yes: Proceed to Step 2; No: Repair wiring and retest.)
- 22. Check the voltage at the cruise control switch while the pedal or button is pressed. Expected should be between 0.5V to 5V. Decision Point: Is the voltage within range? (Yes: Proceed to Step 3; No: Replace the switch.)
- 33. Test the cruise control function with a scan tool while monitoring the switch signal. Decision Point: Does the cruise control engage properly? (Yes: Code is likely intermittent; No: Further diagnostics needed.)
Common causes
- Damaged wiring or connectors in the cruise control circuit
- Failed cruise control switch
- Poor electrical connection due to corrosion or dirt
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
You can drive, but cruise control won't work. Address it soon to restore full functionality.
Will this code come back after clearing?
If the underlying issue isn't fixed, it may return after clearing.
Why does this code show up with other codes?
It often pairs with other cruise control related codes due to shared wiring or circuit components.
Working a real vehicle right now?
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