U0299 OBD-II: Lost Communication With DC to DC Converter Control Module "B"

U0299 Severity

Moderate

Will U0299 go away on its own?

Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.

For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.

Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.

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What Does U0299 Code Mean?

OBD-II Code U0299 is defined as a Lost Communication With DC to DC Converter Control Module "B"

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