B3477
Left Rear Window Express Up or Down Circuit Low
B3477 is an OBD-II diagnostic trouble code meaning: Left Rear Window Express Up or Down Circuit Low. Common causes: open or short circuit in wiring harness, window motor malfunction. Estimated repair cost: $56–167.
Symptoms
- Automatic raising or lowering of the left rear window does not work
- Intermittent operation of the window regulator
- Glass moves slower than usual
Causes
- Open or short circuit in wiring harness
- Window motor malfunction
- Problems with the relay or control unit
- Corrosion of contacts or connectors
How to Fix
- Check wiring harness for damage
- Check the voltage to the window lift motor
- Inspect contacts and connectors for corrosion
- Check the operation of the relay and control unit
- If necessary, replace the window motor or relay
Related codes
Error B3477 by Vehicle Brand
FAQ
What does the B3477 code mean?
B3477 is an OBD-II diagnostic trouble code that indicates: Left Rear Window Express Up or Down Circuit Low
What causes a B3477 error code?
The most common causes of B3477 include: Open or short circuit in wiring harness; Window motor malfunction; Problems with the relay or control unit; Corrosion of contacts or connectors.
How do I fix a B3477 diagnostic trouble code?
To fix B3477: Check wiring harness for damage. Check the voltage to the window lift motor. Inspect contacts and connectors for corrosion. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3477?
Limited driving only, diagnose soon
How much does it cost to fix B3477?
The estimated repair cost for B3477 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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