U0042 OBD-II: Vehicle Communication Bus B (-) Open

U0042 Severity

Moderate

Will U0042 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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U0042 Summary Find a Repair Shop U0042 Details Ask RepairPal CarGenius Other OBD-II Codes

OBD II Fault Code

OBD II U0042

OBD-II Code Diagnostic Trouble Code is defined as a Vehicle Communication Bus B (-) Open

OBD Code Resources

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U0042 OBD-II: Vehicle Communication Bus B (-) Open

Will U0042 go away on its own?

Need a U0042 diagnosis? Trust our experts.

OBD II Fault Code

OBD Code Resources

Need a U0042 diagnosis? Trust our experts.

Ask our experts about U0042.

Other OBD-II Codes

OBD II Fault Code