Troubleshooting P2198 in Your Ford F150: A Comprehensive Guide

If you’re experiencing an O2 sensor signal issue on your 2016 Ford F-150 with the 3.5-liter engine, then you might want to check your purge valve. Here’s a quick guide on how to diagnose and fix the problem.

The purpose of the pressure valve is to purge the gas vapor from the canister to the intake manifold for re-burning. It should only open when it needs to purge the vapor back inside the manifold. However, if the valve is faulty and stays open, excess vapor can enter the manifold, causing the O2 sensors to read a rich mixture.

The first thing to check is the pressure valve. You can test it by blowing air into it and checking for air leakage. If air passes through both ways, the valve is faulty and needs to be replaced.

Once you’ve confirmed that the purge valve is the issue, you can replace it with a new one. Ensure you use the correct part number for your vehicle to guarantee compatibility. After replacing the valve, clear the error codes, and test the vehicle to ensure the issue is resolved.

By following these steps, you can address the O2 sensor signal problem in your 2016 Ford F-150 and improve its overall performance.

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