Powertrain
generic / SAE
P2098
Post Catalyst Fuel Trim System Too Lean (Bank 2)
Bank 2 counterpart of P2096. The post-catalyst fuel trim correction on bank 2 has reached its lean limit, suggesting an exhaust leak after the bank 2 catalyst, a drifting downstream sensor, or a degraded catalyst.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number– / 98
Possible causes
- Exhaust leak after bank 2 catalyst high
- Bank 2 downstream sensor drifting medium
Symptoms
- Check engine light on
- Failed emissions inspection
- Possibly slightly increased fuel consumption
- Sulfur (rotten egg) smell from exhaust under load
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 60–700 €
- Estimated time: 0.5–4 h
- Component: oxygen sensor downstream
- Component: catalytic converter
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012