Powertrain
Definition only
Lights the check engine lamp
P2E6B: System Too Rich During Cylinder Deactivation Bank 2
Standardized SAE J2012 code · P2Exx codes
What does P2E6B mean?
During cylinder deactivation on bank 2, the fuel trim of the active cylinders runs persistently rich. Indicates excess fuel delivery or injector leakage.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- Check engine light on
- Increased fuel consumption
- Black smoke from exhaust on acceleration
- Smell of unburned fuel, fouled spark plugs
Common causes
- High Injector leak on active cylinders
- Medium Deactivation partial - residual combustion
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2E6B on the same make and model first.
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