Left Front Door Lock Circuit Short to Ground
Indicates a short to ground in the left front door lock 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 there's a direct connection to ground in the left front door lock circuit, which can prevent the lock from working properly.
What the computer is actually seeing
The Body Control Module (BCM) sees a voltage drop to 0 volts when it expects a certain voltage (usually around 12 volts) from the door lock actuator switch, indicating a short to ground.
What a healthy reading looks like
Expected voltage at the switch should be approximately 12 volts when the lock switch is not pressed, dropping to near 0 volts when activated.
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 left front door. Look for frayed wires or corrosion at the connectors. - Decision: If damage is found, repair or replace wiring/connectors. If no damage, proceed to step 2.
- 22. Measure the voltage at the door lock switch with the key in the ON position. You should see around 12 volts. - Decision: If voltage is present, go to step 3. If no voltage, there may be a break in the circuit or a problem upstream.
- 33. Disconnect the door lock actuator and check for a short to ground at the actuator connector. Measure resistance between the signal wire and ground. It should be infinite (open). - Decision: If a short is present, replace the actuator. If no short is present, check further back in the wiring harness.
Common causes
- Damaged wiring or connectors in the door harness
- Faulty door lock actuator
- Moisture or corrosion in connector terminals
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, it's generally safe, but the door lock may not work, which can be a security concern.
Will this code come back after I fix it?
If the underlying issue is resolved, the code should not return.
Why does this code appear with others?
Similar issues in the door lock system can trigger multiple codes related to related circuits.
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