What are the common causes of P260F?

An EVAP monitoring processor that fails its self test. A corrupted EVAP monitor calibration in the ECM. A corroded or loose EVAP system connector. A restricted EVAP vent or hose skewing the monitor.

Read EVAP monitor status on a scan tool. Check the EVAP system for stored related faults. Inspect the EVAP hoses and vent for restriction. Check the EVAP connectors for corrosion. Update the EVAP monitor calibration if the hardware tests good. Clear the code and retest.

P260F

EVAP System Monitoring Processor Performance

System: Computer output circuits (P code)
Lamp: Check Engine Light
Category: Powertrain - Computer and Auxiliary Controls

What it means

P260F means EVAP System Monitoring Processor Performance.

Check these first

An EVAP monitoring processor that fails its self test
A corrupted EVAP monitor calibration in the ECM
A corroded or loose EVAP system connector
A restricted EVAP vent or hose skewing the monitor

What to do next

Read EVAP monitor status on a scan tool
Check the EVAP system for stored related faults
Inspect the EVAP hoses and vent for restriction
Check the EVAP connectors for corrosion
Update the EVAP monitor calibration if the hardware tests good
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.