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CEL P2198
I can’t seem to get rid of mine
changed the AOS
new o2 sensors all round
changed the purge valve under the inlet manifold
new oil cap
new fuel cap
new fuel pump
new coil packs
only mods on the car are sprint booster and miltek cat back
From internet search: Code P2198 is a result of the pre-catalytic converter oxygen sensor detecting a rich air to fuel ratio of the exhaust on bank 2. ... This DTC code indicates that there is too much fuel in relation to the oxygen in your vehicle, or that the oxygen sensor is faulty and reading an incorrect air/fuel ratio.