U0043 OBD-II: Vehicle Communication Bus B (-) Low

U0043 Severity

Moderate

Will U0043 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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OBD II Fault Code

OBD II U0043

OBD-II Code Vehicle Communication Bus B (-) Low is defined as a Vehicle Communication Bus B (-) Low

OBD Code Resources

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U0043 OBD-II: Vehicle Communication Bus B (-) Low

Will U0043 go away on its own?

Need a U0043 diagnosis? Trust our experts.

OBD II Fault Code

OBD Code Resources

Need a U0043 diagnosis? Trust our experts.

Ask our experts about U0043.

Other OBD-II Codes

OBD II Fault Code