Ignition Switch Circuit Failure
The ignition switch circuit has detected a fault.
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)
The ignition switch connects your battery to the vehicle's electrical systems when you turn the key or press the start button. If there's a fault, the vehicle may not start or lose power to certain systems.
What the computer is actually seeing
The computer monitors the voltage and continuity from the ignition switch. It expects around 12 volts when the key is in the ON position and 0 volts when in OFF.
What a healthy reading looks like
12V in ON position, 0V in OFF.
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. Check the battery voltage; it should be around 12.6 volts with the vehicle off.
- 22. Inspect the ignition switch operation; turn the key and verify that you are getting 12 volts at the ignition switch connector when the key is ON.
- 33. Check wiring and connectors related to the ignition system for signs of damage or corrosion.
- 44. Verify all related fuses are intact and operational; replace any blown fuses.
- 55. If the ignition switch and wiring are good, test the ignition switch for proper operation using a multimeter.
Common causes
- Faulty ignition switch
- Wiring or connector issues
- Blown fuse related to ignition systems
- Corrosion in connectors or grounds
Typical repair cost
$$ - $$$
Related codes
Frequently asked questions
Is it safe to drive if this code is active?
It's best to avoid driving until the issue is resolved, as it may lead to loss of engine control.
Will this code come back?
If the underlying issue isn't fixed, the code will likely return.
Why does this code sometimes pair with others?
Multiple codes can indicate a common problem in the ignition circuit or power supply issues.
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