Center Ambient Light Zone Circuit Malfunction
The B0190 code means the vehicle's onboard diagnostic system has detected: Center Ambient Light Zone Circuit Malfunction. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $20 - $250 (parts and labor)
Basic scanners skip body codes entirely. BlueDriver reads airbag, HVAC, lighting, and BCM codes through your phone.
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Common Symptoms
- Ambient lighting zone not illuminating
- Ambient light color incorrect
- Ambient brightness not adjustable
- Ambient lighting flickering
Probable Causes (Ranked by Likelihood)
- Failed ambient LED strip or module Very High
- Ambient light controller fault High
- Poor connection at ambient light harness Moderate
- BCM ambient light communication error Low
Step-by-Step Diagnostic Procedure
-
Inspect ambient LED strip
-
Check ambient light controller
-
Test connections at light harness
-
Scan BCM for ambient light codes
Frequently Asked Questions
What is ambient lighting?
Decorative interior lighting providing a soft glow, available in multiple colors on many vehicles.
How many zones are there?
Varies by vehicle. Luxury vehicles may have 10 or more independently controlled zones.
Can aftermarket ambient lighting be added?
Yes, aftermarket LED ambient lighting kits are available for most vehicles.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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