Data Validity - Warning Indicator Lamp
Indicates a problem with the validity of the warning indicator lamp signal.
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 system is saying the light on your dash that warns you about issues isn't giving a correct reading, meaning the lamp may be burnt out or the circuit faulty.
What the computer is actually seeing
The electronic control unit (ECU) sees that the warning indicator lamp signal is either stuck in the ON or OFF position when it should toggle based on system conditions. It checks this within a specified time frame—usually within milliseconds—and expects to see the light operate correctly during key cycle tests.
What a healthy reading looks like
The warning lamp should turn ON with a voltage of approximately 12V when activated and drop to 0V when deactivated.
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. Visually inspect the warning indicator lamp for any signs of being burnt out. If burnt out, replace the lamp and clear the code.
- 22. Check the voltage at the warning lamp connector with the ignition ON. You should see 12V. If not, check wiring and fuses before replacing the lamp.
- 33. Inspect the wiring harness and connectors for corrosion or damage. Repair or replace any faulty connectors or wiring found.
- 44. Check the ground connection for the lamp; it should have a resistance of less than 5 ohms to ground. Repair any issues if found.
- 55. Clear the fault code and perform a lamp test by cycling the ignition. If the code returns, consider replacing the ECU.
Common causes
- Burnt-out warning lamp
- Faulty wiring or connectors in the lamp circuit
- ECU software glitch
- Bad ground connection at the warning lamp
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, the vehicle is typically drivable, but you should address it soon to ensure warning lights function properly.
Will this code come back?
If the underlying issue isn't fixed, like a burnt light or bad wiring, yes, it will return.
Why does this code pair with other codes?
It often indicates a broader issue with the vehicle’s feedback system, which can affect multiple circuits.
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