Rear Left Door Open Switch Circuit
The rear left door open switch is indicating an open 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 computer thinks the rear left door is open when it shouldn't be, which can affect other systems like the alarm or interior lights.
What the computer is actually seeing
The Body Control Module (BCM) is monitoring the door open switch signals. If it sees no signal when the door is expected to be closed, it triggers this code.
What a healthy reading looks like
Typically, you should see a voltage near 0V (door closed) or around 12V (door open) at the switch depending on the door state.
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 and connectors for damage or corrosion at the rear left door.
- 22. Test the door switch itself using a multimeter; it should show continuity when the door is closed and no continuity when open.
- 33. Check the voltage signal at the door switch terminal; should be around 0V when closed, and approximately 12V when open.
- 44. If the switch is good, inspect the wiring back to the Body Control Module for shorts or breaks.
- 55. If all wiring is intact and switch is functional, suspect a faulty Body Control Module.
Common causes
- Faulty door switch
- Wiring damage or corrosion
- Poor connector fitting at the BCM
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, it's safe to drive but fix it soon to avoid issues with alarms or battery drain.
Will this code come back after clearing it?
If the issue isn't fixed, it likely will return.
What else can trigger this code?
A problem with the BCM itself or other door switch circuits may also lead to this fault.
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