OBD-II code · Powertrain (generic, extended)
P2E69 System Too Rich During Cylinder Deactivation Bank 1
During cylinder deactivation on bank 1, the fuel trim of the active cylinders runs persistently rich. Indicates excess fuel delivery or injector leakage.
Is it safe to drive with P2E69?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyInjector leak on active cylinders
- PossibleDeactivation partial - residual combustion
Symptoms
- Check engine light on
- Increased fuel consumption
- Black smoke from exhaust on acceleration
- Smell of unburned fuel, fouled spark plugs
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–6 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Fuel Injectors, Deactivation Solenoids, Intake System
Related codes
- P2E6BSystem Too Rich During Cylinder Deactivation Bank 2
- P2E66Engine Coolant Bypass Valve E Range/Performance
- P2E67Engine Coolant Bypass Valve E Stuck Closed
- P2E68System Too Lean During Cylinder Deactivation Bank 1
- P2E6ASystem Too Lean During Cylinder Deactivation Bank 2
- P2E6CHybrid/EV Battery Pack A Cell Thickness
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.