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P2198 Diagnostic Trouble Code Discussion for July 2014

Heated Oxygen Sensor (Bank 2 Sensor 1) Stuck Rich

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Trouble Ticket Help Requests for DTC P2198
Help Request Posted
2006 Ford Taurus SE 3.0L MIL Lamp on VIN: 1FAFP53U36
Came back with 2196 2198 codes and misfires. Of course not missing here but customer stated no power shaking ETC. Found Front (bank 2) O2 switching much slower than rear bank 1. Replaced with NGK sensor (denso not available same day here) Switching better bu...
July 02, 2014
2007 Lincoln Navigator Ultimate 5.4L MIL Lamp on VIN: 5LMFU28597
P2198: testing and results. Koeo all o2 sensors under .02 volts, after starting sensors go to 900mv as soon as heaters turn on. Checked oil for fuel vapors, none clean oil. Disconnected purge line to tank, no change, create large vacuum leak numbers go down. Disconnected both front o2 se...
July 11, 2014