Power Window Control Module Signal Circuit Problem
This code indicates an issue with the power window control module's signal 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 power window control module isn't sending or receiving signals properly. This might be due to a wiring issue, the module itself, or a problem with the switches.
What the computer is actually seeing
The power window control module expects to see a binary signal (0-12V) from the switch when pressed. If it doesn't see the expected voltage changes when the switch is activated, it sets this code.
What a healthy reading looks like
Voltage should be 0V when the switch is not pressed and between 10-12V when pressed.
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. Check the battery voltage at the power window control module. It should be 12V. If not, repair the power supply circuit.
- 22. Inspect wiring and connectors between the switch and the module for any visible damage or corrosion. Repair as needed.
- 33. Test the switch for continuity. With the switch pressed, you should measure below 2 ohms. If it reads open, replace the switch.
- 44. Connect a scan tool and monitor the signals from the switches. If the module does not register the switch input, replace the power window control module.
Common causes
- Damaged wiring in the power window circuit
- Faulty power window control module
- Malfunctioning switch
- Corroded connectors at the module or switches
Typical repair cost
$$$ (approximately $150-$300)
Related codes
Frequently asked questions
Is it safe to drive with this code present?
Yes, but windows may not operate. Fix soon to avoid passenger inconvenience.
Will this code come back after clearing?
It may come back if the underlying issue isn't resolved.
Why does this code appear with other window-related codes?
They often share components or circuits, pointing to a common electrical issue.
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