Engine-Codes - Generic - P2099

P2099 Code - Post Catalyst Fuel Trim System Too Rich Bank 2

- Code Popularity: 54,450 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
ChatAC AutoCodes.com AI Chat

What are the Possible Causes of the DTC P2099?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Heated Oxygen Sensor
  • Heated Oxygen Sensor harness is open or shorted
  • Heated Oxygen Sensor circuit poor electrical connection
  • Exhaust leaks
  • Contaminated Heated Oxygen Sensor
⚠ Does your Car have Safety Recalls? → Check here

How to Fix the DTC P2099?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Search for P2099 Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P2099 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P2099 Code Mean?

The Powertrain Control Module (PCM) monitors the correction value from downstream Heated Oxygen Sensor (HO2S) as part of the fore-aft oxygen sensor control routine. The test fails when correction value is greater than a calibrated limit.

P2099 Code - Post Catalyst Fuel Trim System Too Rich Bank 2

Need more Information on the Code?

Need more information on how to fix the P2099 code? Get Access to Factory Service Manuals

Code P2099 Information for Specific Makes

Need Help with the Code?

Get the P2099 code diagnosed by a professional: Find a repair shop in your area