U029D OBD-II: Lost Communication With noX Sensor "A"

U029D Severity

Moderate

Will U029D 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

U029D Summary Find a Repair Shop U029D Details Ask RepairPal CarGenius Other OBD-II Codes

OBD II Fault Code

OBD II U029D

OBD-II Code Diagnostic Trouble Code is defined as a Lost Communication With noX Sensor "A"

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.

U029D OBD-II: Lost Communication With noX Sensor "A"

Will U029D go away on its own?

Need a U029D diagnosis? Trust our experts.

OBD II Fault Code

OBD Code Resources

Ask our experts about U029D.

Other OBD-II Codes

OBD II Fault Code