Door Ajar Switch Circuit Shorted to Ground
This code indicates a short in the door ajar 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)
Inside the vehicle, there's a switch that senses if a door is open or closed. If the wiring to that switch has a short to ground, the computer thinks the door is always open, even when it's not.
What the computer is actually seeing
The vehicle's computer detects an unexpected voltage drop in the door ajar switch circuit, lower than 0.5 volts when the door should be closed, indicating a short circuit to ground.
What a healthy reading looks like
Expected voltage when the door is closed should be around battery voltage (12-14 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.
- 11. Inspect the wiring harness for the door switch; look for any visible damage or fraying. If damaged, repair or replace as needed. Decision: If wiring is damaged, fix it and retest.
- 22. Check the door ajar switch for proper function. Disconnect it and test resistance across the terminals; it should show continuity when the door is closed. Decision: If the switch is faulty, replace it and retest.
- 33. With the switch disconnected, measure the voltage at the connector with the key on. It should show battery voltage. Decision: If no voltage, trace wiring back to the computer.
Common causes
- Damaged wiring harness near the door
- Faulty door ajar switch
- Water intrusion into the door assembly
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, it's safe to drive, but your interior lights may stay on or you may not be able to lock the doors.
Will this code come back after I clear it?
It may come back if the underlying issue isn’t resolved or if there’s a persistent short.
Why might this code pair with others?
Multiple codes can indicate issues in interconnected systems, like door or body control harness problems.
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