P3800 OBD-II: Reserved For Future Use

P3800 Severity

Moderate

Will P3800 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

P3800 Summary Find a Repair Shop P3800 Details Ask RepairPal CarGenius Other OBD-II Codes

OBD II Fault Code

OBD II P3800

OBD-II Code Reserved For Future Use is defined as a Reserved For Future Use

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.

P3800 OBD-II: Reserved For Future Use

Will P3800 go away on its own?

Need a P3800 diagnosis? Trust our experts.

OBD II Fault Code

OBD Code Resources

Need a P3800 diagnosis? Trust our experts.

Ask our experts about P3800.

Other OBD-II Codes

OBD II Fault Code