Wiper Motor Control Circuit Low
Wiper motor control circuit is detecting low voltage.
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What it means (plain English)
The wiper motor isn't getting enough power from the control module or the wiring is damaged, causing it to potentially malfunction.
What the computer is actually seeing
The body control module (BCM) is seeing a voltage reading from the wiper motor circuit lower than 5V when it should be higher, especially during requested operation (like when the wipers are turned on).
What a healthy reading looks like
Normal voltage to the wiper motor should be between 9V and 14V 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 related to the wiper motor; look for any damage, corrosion, or loose connections. If any issues are found, fix them and retest.
- 22. With the key in the ON position, check the voltage at the wiper motor connector while operating the wiper switch. You should see about 12V. If voltage is low, go to step 3.
- 33. Check the ground connection of the wiper motor. Disconnect the motor and measure resistance between the ground terminal and a known good ground; it should be under 5 ohms. If it's high or open, fix the ground. If good, go to step 4.
- 44. Test the wiper motor itself by applying 12V directly to it. If it doesn't operate, the motor is likely faulty and should be replaced. If it operates, the BCM is suspect.
Common causes
- Damaged wiring or connectors in the wiper motor circuit
- Faulty wiper motor
- Failed body control module (BCM)
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, but wipers may not function properly in rain or snow, so fix it soon.
Will this code come back after I clear it?
If the underlying issue isn't fixed, yes, the code will likely return.
Why does this code appear with others?
It may indicate a systemic issue with the wiper control circuit or related components.
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