U0046 OBD-II: Vehicle Communication Bus C

U0046 Severity

Moderate

Will U0046 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.

Schedule Diagnosis

U0046 Summary Find a Repair Shop U0046 Details Ask RepairPal CarGenius Other OBD-II Codes

OBD II Fault Code

OBD II U0046

OBD-II Code Vehicle Communication Bus C is defined as a Vehicle Communication Bus C

OBD Code Resources

Exceptional warranty

Shops offer at least a 12-month or 12,000-mile warranty.

Satisfied customers

We ensure high satisfaction through verified customer reviews.

Transparent pricing

You'll get a Fair Price Guarantee on all RepairPal estimates.

Millions trust us for auto repair — RepairPal Certified^® locations must pass a rigorous approval process to ensure quality, customer satisfaction, and fair pricing.

U0046 OBD-II: Vehicle Communication Bus C

Will U0046 go away on its own?

Need a U0046 diagnosis? Trust our experts.

OBD II Fault Code

OBD Code Resources

Need a U0046 diagnosis? Trust our experts.

Ask our experts about U0046.

Other OBD-II Codes

OBD II Fault Code