P2098 2017 GMC Sierra Code - Post Catalyst Fuel Trim System Low Limit Bank 2

Symptoms may include decreased fuel efficiency, engine misfires, rough idling, and the illumination of the Check Engine Light.

Common causes include a faulty oxygen sensor, issues with the fuel system, vacuum leaks, exhaust leaks, or a problem with the catalytic converter.

While the vehicle may still be operational with this code, it is important to address it promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance.

It is generally not recommended to drive the vehicle extensively with this code present, as it can lead to decreased fuel efficiency and potential damage to the catalytic converter.

Diagnosis typically involves using an OBDII scanner to retrieve the code, performing a visual inspection for leaks, testing oxygen sensors, and checking the fuel system components.

Repair tips may include replacing the oxygen sensor, fixing any leaks in the exhaust or fuel system, ensuring proper fuel pressure, and inspecting the catalytic converter for damage.

Depending on the underlying cause, some DIY enthusiasts may be able to address this code by following repair guides and using basic tools, but more complex issues may require professional assistance.

The cost of repairs can vary significantly based on the specific cause of the code, but it may range from a few hundred dollars for simpler fixes to over a thousand dollars for more extensive repairs involving major components.

The repair time can vary depending on the cause of the code and the complexity of the fix, ranging from a quick sensor replacement that may take an hour or two to more involved repairs that could span several hours or days.

If the code persists after repairs, it is advisable to recheck the components that were addressed initially, perform a thorough inspection for any overlooked issues, and consider seeking professional help for further diagnosis.