2004 Ford Mustang GT P2196 Code: Stuck Rich Condition After O2 Sensor and Vacuum Leak Checks
I've been experiencing a persistent P2196 'stuck rich' fault code for over two weeks. I have already replaced both oxygen sensors located before the catalytic converter, resealed the intake manifold, and performed a thorough vacuum leak inspection with no positive findings. I've also checked all wiring harnesses and connections, but the issue continues to persist. The P2196 code indicates an overly rich air-fuel mixture, which is typically linked to fuel delivery or sensor issues in the 2004 Ford Mustang GT.
Did you replace the O2 sensors at a dealership or with aftermarket parts? Dealer-installed sensors may have better compatibility and calibration for your 2004 Ford Mustang GT, which could impact P2196 code resolution.