Ignition Switch Circuit Failure
There's a problem with 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 car's computer is not seeing the right signals from the ignition switch. This can prevent the car from starting or cause other electrical issues.
What the computer is actually seeing
The computer is expecting a certain voltage range from the ignition switch - typically around 12V when in the ON position. It sees either no voltage or an incorrect voltage.
What a healthy reading looks like
12V (when ignition is ON) and 0V (when 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; should be above 12.4V.
- 2 - If low, charge or replace battery. Proceed only after resolving battery issue.
- 32. Inspect the ignition switch connectors for corrosion or damage.
- 4 - If damaged, repair or replace connector. If intact, proceed.
- 53. Measure voltage at the ignition switch when turned ON.
- 6 - If not 12V, the switch is likely faulty. Replace it. If it is 12V, proceed.
- 74. Trace wiring from the ignition switch to the PCM; look for shorts or breaks.
- 8 - If a wiring issue is found, repair it. If not, continue to the next step.
- 95. Use a scan tool to read any additional codes and verify fuel pump operation.
- 10 - If unrelated codes exist, address them first. If all clear, suspect PCM.
Common causes
- Faulty ignition switch
- Wiring issues
- Bad connectors or corrosion
- Short circuit in the ignition circuit
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
No, it can cause your vehicle not to start or stall, putting you at risk.
Will this code clear itself?
Not likely; it usually indicates a persistent issue that needs fixing.
Why does it pair with other electrical codes?
It's common for wiring issues to affect multiple systems, leading to multiple codes.
Working a real vehicle right now?
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