Ignition Switch Circuit Failure
There’s a problem in the ignition switch circuit.
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 isn’t sending the right signal to the engine computer to start the vehicle or is completely failing to connect.
What the computer is actually seeing
The engine control module (ECM) expects to see a signal voltage of about 12 volts from the ignition switch when in the 'ON' position. If it sees less than 10 volts or no voltage at all in that position, it throws this code.
What a healthy reading looks like
When the ignition switch is 'ON', the voltage should be between 11 and 14 volts. In 'OFF' position, should read 0 volts.
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.
- 1Check the ignition switch position and ensure it’s in the 'ON' position. Confirm the battery voltage is above 12 volts.
- 2Inspect the wiring and connectors leading to the ignition switch for any visible damage, corrosion, or loose connections.
- 3Using a multimeter, measure the voltage at the ignition switch terminal. It should be between 11 and 14 volts. If not, check the wiring integrity.
- 4If voltage is correct at the switch but the code persists, replace the ignition switch and clear the code before testing.
Common causes
- Faulty ignition switch
- Wiring issue in the ignition circuit
- Poor connection at the ignition switch connector
- Blown fuse related to ignition circuit
Typical repair cost
$$ - $$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's not advisable to drive since your vehicle may fail to start intermittently.
Will this code come back after clearing it?
Yes, if the underlying issue with the ignition switch or wiring isn’t fixed, the code will return.
Why does this code sometimes pair with others?
Other codes may indicate related faults, such as problems with the battery or other circuits affected by the ignition system.
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