Code result
P05F6
Exhaust Aftertreatment Power Relay Control Circuit Stuck On
Moderate severity
What it means
The aftertreatment power relay is stuck on - aftertreatment electronics stay powered after key-off, draining the battery.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Relay welded closed
highOne of the most commonly reported causes for this code — check this first.
Carbon or debris buildup preventing free movement
lowLess common, but worth ruling out after the more likely causes.
Component wear with age - mechanical play
lowLess common, but worth ruling out after the more likely causes.
Related help
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