High Beam Auto-Dimming System Malfunction
The B0088 code means the vehicle's onboard diagnostic system has detected: High Beam Auto-Dimming System Malfunction. This is a moderate severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $50 - $500 (parts and labor)
Basic scanners skip body codes entirely. BlueDriver reads airbag, HVAC, lighting, and BCM codes through your phone.
Check Price on AmazonAffiliate link -- we earn a commission at no extra cost to you.
Common Symptoms
- Auto high beam dimming not working
- High beams stay on for oncoming traffic
- High beam assist warning
- High beams never activate automatically
Probable Causes (Ranked by Likelihood)
- Failed forward camera or sensor Very High
- Dirty windshield in front of camera High
- High beam assist module fault Moderate
- Wiring fault between camera and module Low
Step-by-Step Diagnostic Procedure
-
Inspect camera lens for dirt
-
Clean windshield near camera
-
Scan for high beam assist DTCs
-
Check camera alignment
Frequently Asked Questions
How does auto high beam work?
A camera detects oncoming lights and automatically switches to low beams.
Can a dirty windshield affect it?
Yes, dirt near the camera prevents proper detection.
Can I use high beams manually?
Yes, manual control still works normally.
Sources
This page is built from documented references. Verify against your own service info before repair work.
Explore More
Was this helpful?
Share carcodefinder.com with a friend who needs to decode their check engine light.