Liftgate Control Module Input Circuit Low
The liftgate control module is reporting a low input signal.
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What it means (plain English)
The liftgate control module is getting a voltage reading that's lower than it should. This usually means there's a problem with the wiring or the module is faulty.
What the computer is actually seeing
The module sees voltages typically from 0 to 5 volts. A reading below 0.5 volts indicates a problem in the circuit.
What a healthy reading looks like
Expected voltage at the liftgate control input should be between 0.5 to 5.0 volts when the liftgate switch is operated.
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 visible damage or corrosion. Check that connections are secure. If yes, repair as needed. Decision: Is wiring intact? If no, repair and retest; if yes, go to step 2.
- 22. Test the voltage input at the liftgate control module. Use a multimeter set to DC volts. If the reading is below 0.5 volts, proceed to step 3; if it reads between 0.5 to 5 volts, suspect a faulty module. Decision: Is the voltage low? If yes, go to step 3; if no, replace module and retest.
- 33. Check the liftgate switch. Test its operation and see if it provides voltage when actuated. If it fails to provide voltage, replace the switch. Decision: Is the switch operating correctly? If no, replace switch; if yes, suspect the module.
Common causes
- Damaged wiring or connectors
- Faulty liftgate control module
- Bad liftgate switch
- Ground issues in the circuit
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, you can drive, but the liftgate may not function properly.
Will this code come back after clearing?
If the issue isn't resolved, the code will likely return.
Why does this code pair with other codes?
Multiple codes can indicate issues with the same circuit or system, affecting multiple components.
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