Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2013EXPEDITION EL KING RANCH, RWDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS (EXCEPT DIESEL & HYBRID) - DTC P164A - P2A04, DTC U0046- U300CDTC P2198: O2 SENSOR SIGNAL BIASED/STUCK RICH: BANK 2, SENSOR 1
2013 Ford Expedition EL King Ranch, RWD
DTC P2198: O2 Sensor Signal Biased/Stuck Rich: Bank 2, Sensor 1
2013 Ford Expedition EL King Ranch, RWDSECTION DTC P2198: O2 Sensor Signal Biased/Stuck Rich: Bank 2, Sensor 1
DTC P2198: O2 SENSOR SIGNAL BIASED/STUCK RICH: BANK 2, SENSOR 1
| Description: | A heated oxygen sensor (HO2S) indicating rich at the end of a test is trying to correct for an over lean condition. This DTC sets when the fuel control system no longer detects switching for a calibrated amount of time. | ||
| Possible Causes: | Electrical:
Fuel System:
Evaporative Emission (EVAP) system:
Exhaust Gas Recirculation (EGR) System:
Base Engine:
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| Diagnostic Aids: | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST H . | ||
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.