Code result
P260F
EVAP System Monitoring Processor Performance
Moderate severity
What it means
The dedicated EVAP monitoring processor (often a small auxiliary CPU inside the engine controller or a separate module) does not pass its self-test or runs out of step with the main monitor logic.
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
Internal fault in the monitoring processor
highOne of the most commonly reported causes for this code — check this first.
Software memory corruption
mediumA plausible cause — test and verify before replacing parts.
Module software outdated, reflash may resolve
lowLess common, but worth ruling out after the more likely causes.
Related help
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