Rear Left Door Open Circuit
The rear left door's open/close circuit has 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 computer is getting a signal that the rear left door is either stuck open or the sensors aren't reading it correctly, which affects systems like interior lights, locks, or other door-related functions.
What the computer is actually seeing
The Body Control Module (BCM) detects a signal voltage below 0.5 volts when the rear left door is closed and above 4.5 volts when it's open. If voltages are outside this range, it triggers the code.
What a healthy reading looks like
Closed: 0.0 - 0.5 volts, Open: Above 4.5 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 and connectors at the rear left door for any visible damage or corrosion. Is anything loose or broken?
- 22. Test the door ajar switch with a multimeter. While the door is closed, you should see a voltage close to 0.0 - 0.5 volts. What do you measure?
- 33. Check door alignment. Does the door latch completely? If it's misaligned, realign it and see if the problem persists.
- 44. If wiring, connector, and switch are okay, test the BCM for faults. Does the code reappear after clearing?
Common causes
- Faulty door ajar switch
- Wiring issues (short, open circuit)
- Connector problems (corrosion or disconnection)
- Door alignment issues preventing full closure
Typical repair cost
$$-$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, but check the door operation as it may affect your interior functions like lighting and locks.
Will this code come back after clearing?
If there's an underlying issue, yes, it will return after driving for a while.
Why does this issue sometimes pair with other door codes?
When one door's circuit has a fault, it can trigger faults in other door circuits due to shared components in the BCM.
Working a real vehicle right now?
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