P2193System Too Lean at Higher Load (Bank 2)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2193 reports for bank 2 what P2191 reports for bank 1: in the upper load zone the long-term trim of that bank sits at its enrichment limit. It only exists on engines with a separate front sensor per bank, such as V6, V8 and boxer engines. The useful question is whether bank 1 shows the same. Lean at high load on both banks (P2191 with P2193) points to something they share, chiefly fuel pump, filter, pressure regulation or the air mass sensor. Bank 2 alone narrows it to that side: injectors on bank 2, an intake gasket or runner leak there, or an exhaust leak ahead of the bank 2 sensor. No manufacturer documents P2193 publicly; GM monitors the comparable range as P2179, and CARB sets the general rule for exhausted fuel adaptation in 13 CCR 1968.2 (e)(6.2.2).
- What you may notice
- Check engine light on
- Hesitation under heavy acceleration
- Bank 2 long-term trim much higher than bank 1 at high load
- Likely causes
- LikelyWeak fuel supply (pump, filter, pressure regulation), usually with P2191
- PossibleRestricted injectors on bank 2
- PossibleIntake gasket or runner leak on the bank 2 side
- RareExhaust leak ahead of the bank 2 front sensor
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €50 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.