OBD-II code · Body
B0490 Display Backlight Circuit
The infotainment or instrument cluster module has detected a fault in the display backlight circuit. The display may stay dark or be unreadable in low light.
Is it safe to drive with B0490?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyBacklight LEDs or inverter failed
- PossibleDisplay module internal fault
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Display Module, Backlight Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.