Code result
P2610
ECM/PCM Internal Engine Off Timer Performance
Moderate severity
What it means
The engine controller's internal soak-time/engine-off timer fails its plausibility check — for example readings claim instant cool-down or never-cooled. Cold-start enrichment, EVAP and catalyst monitors depend on this timer; a fault freezes those readiness monitors.
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
ECU internal timer fault
highOne of the most commonly reported causes for this code — check this first.
Keep-alive memory power intermittent
mediumA plausible cause — test and verify before replacing parts.
Related help
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