Need a P2099 diagnosis? Trust our experts.
Oops! We got lost!
Your location cannot be detected. Please enter your zipcode for nearby shops.
P2099 Severity
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.
The engine computer (PCM) monitors the amount of oxygen left over in the exhaust stream after the catalytic converter. If there is an excessive amount of oxygen left over, code P2099 will be set.
RepairPal Car Genius™ is a free resource for vehicle owners seeking advice on maintenance, auto repair, shop inquiries, estimates, and finding a trustworthy repair shop in your area.
Call us at 877-913-1554
Available 9am – 6pm ET Monday through Friday
OBD-II Code P2099 is defined as a Post Catalyst Fuel Trim System Too Rich
The engine computer (PCM) monitors the amount of oxygen left over in the exhaust stream after the catalytic converter. If there is an excessive amount of oxygen left over, code P2099 will be set.