B320B
Rear Door Window Motor
B320B is an OBD-II diagnostic trouble code meaning: Rear Door Window Motor. Common causes: window lift motor malfunction, open or shorted wiring harness. Estimated repair cost: $33–111.
Symptoms
- Rear window regulator does not work
- Intermittent operation of the window regulator
- Relay clicks without glass movement
- Power window circuit fuse blown
Causes
- Window lift motor malfunction
- Open or shorted wiring harness
- Oxidation of contacts
- Body control module problems
- Mechanical jamming of glass guides
How to Fix
- Check the fuse of the corresponding circuit
- Diagnose power supply to the electric motor
- Check the integrity of the wiring harness
- Test engine operation directly
- Clean and lubricate glass guides
- Replace the faulty electric motor if necessary
Related codes
Error B320B by Vehicle Brand
FAQ
What does the B320B code mean?
B320B is an OBD-II diagnostic trouble code that indicates: Rear Door Window Motor
What causes a B320B error code?
The most common causes of B320B include: Window lift motor malfunction; Open or shorted wiring harness; Oxidation of contacts; Body control module problems.
How do I fix a B320B diagnostic trouble code?
To fix B320B: Check the fuse of the corresponding circuit. Diagnose power supply to the electric motor. Check the integrity of the wiring harness. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B320B?
Yes, but get it checked soon
How much does it cost to fix B320B?
The estimated repair cost for B320B is $33–111. Actual cost depends on your vehicle, location, and labor rates.
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