U0033 OBD-II: Vehicle Communication Bus A (-) Open

U0033 Severity

Moderate

Will U0033 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

U0033 Summary Find a Repair Shop U0033 Details Ask RepairPal CarGenius Other OBD-II Codes

OBD II Fault Code

OBD II U0033

OBD-II Code Vehicle Communication Bus A (-) Open is defined as a Vehicle Communication Bus A (-) Open

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.

U0033 OBD-II: Vehicle Communication Bus A (-) Open

Will U0033 go away on its own?

Need a U0033 diagnosis? Trust our experts.

OBD II Fault Code

OBD Code Resources

Need a U0033 diagnosis? Trust our experts.

Ask our experts about U0033.

Other OBD-II Codes

OBD II Fault Code