P2099: Post Catalyst Fuel Trim System Too Rich Bank 2
What Does P2099 Mean?
P2099 is a diagnostic trouble code indicating: Post Catalyst Fuel Trim System Too Rich Bank 2. This code relates to the powertrain system. It has been reported in NHTSA complaints across 5 different vehicle models.
Symptoms of P2099
- ⚠️ Check engine light illuminated
- ⚠️ Rough or unstable idle
- ⚠️ Loss of engine power
Common Causes
- 🔍 Worn or fouled spark plugs
- 🔍 Throttle body or throttle position sensor issue
- 🔍 Turbocharger or boost system issue
- 🔍 Sensor or control module malfunction
P2099 Reports by Year
Real Owner Reports
From NHTSA complaint database — actual owner descriptions.
"I bought the equinox with 30,000 miles on it. It's at 67,000 now and I maintain the vehicle regularly. So why have I replaced the throttle body already because it gets dirty fast? And now I'm getting a check engine light for P2099 TurboCharger Underboost. When the vehicle is not old it's 5 years old"
— Chevrolet Equinox owner, 01/12/2026
"Engine light and P2099 waste gate actuator pin on the turbo of the Cruze has malfunctioned. There was a recall for this exact issue and my vehicle year was included but not my VIN number. I have less than 95,000 miles on the car and this part should also be recalled on my vehicle as well. Many i"
— Chevrolet Cruze owner, 07/04/2022
"IN 2018 CODE P2099 WAS FIXED ON MY 2013 CHEVY CRUZE AND NOW THE CODE IS POPPING UP AGAIN IT'S ONLY BEEN A YEAR AND A HALF AND THE PART WAS FIXED BY THE CHEVY DEALER SHIP IT'S WAS BRAND NEW, SO WHY DO I NEED ANOTHER PLEASE CONTACT ME CONCERNING THIS MATTER THANKS @ [XXX] OR [XXX]. INFORMATION REDA"
— Chevrolet Cruze owner, 01/21/2020
Source: NHTSA Complaints Database
Most Reported Vehicles for P2099
Based on NHTSA owner complaint data.
| # | Vehicle | Reports |
|---|---|---|
| 1 | CHEVROLET CRUZE | |
| 2 | FORD ESCAPE | |
| 3 | CHEVROLET EQUINOX | |
| 4 | DODGE DURANGO | |
| 5 | JEEP WRANGLER |
P2099 Reports by Vehicle
Detailed NHTSA complaint analysis for each vehicle model.
Frequently Asked Questions
Can I drive with this code?
Will this code clear itself?
How do I find the exact cause?
What To Do Next
Possible Fixes
- 🔧 Have the code scanned with a professional-grade scanner to read freeze frame data
- 🔧 Test the relevant sensor(s) with a multimeter before replacing
- 🔧 If DIY repair isn't feasible, get a diagnostic from a trusted mechanic ($50-150)
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1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
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3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.