P2E6B

System Too Rich During Cylinder Deactivation Bank 2

Moderate severity

During cylinder deactivation on bank 2, the fuel trim of the active cylinders runs persistently rich. Indicates excess fuel delivery or injector leakage.

Common causes

Injector leak on active cylinders
One of the most commonly reported causes for this code — check this first.
high
Typical part cost: $220-1650
Deactivation partial - residual combustion
A plausible cause — test and verify before replacing parts.
medium
Typical part cost: $220-1650
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First things to check

1Confirm the code with a scan tool and check for additional related codes.
2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.

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Related codes

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Frequently asked questions

What does P2E6B mean?

P2E6B means "System Too Rich During Cylinder Deactivation Bank 2". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.

What are the most common causes of P2E6B?

injector leak on active cylinders; deactivation partial - residual combustion — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.

Can I keep driving with this code?

The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.

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