P2E69

System Too Rich During Cylinder Deactivation Bank 1

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$33–94 (est.)

Symptoms

Unstable engine operation when cylinders are deactivated
Increased fuel consumption
Black smoke from the exhaust pipe
Power Loss
Check Engine Light Illuminates

Causes

Injector malfunction
Problems with the oxygen sensor
Air control system malfunction
Leaks in the vacuum system
ECU software error

How to Fix

Check the operation of the injectors
Diagnose the condition of oxygen sensors
Check the tightness of air ducts and vacuum hoses
Scan the system for additional errors
Update ECU software

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