What does fault code P260F mean?

The control module has detected a fault in the Evaporative Emission System (EVAP) Monitoring Processor Performance (P260F). Measurements: • Evaporative Emission System (EVAP) Monitoring Processor Performance – Coil Resistance (Resistance (Ω)): 3 - 30 Ω (typical) [Condition: Connector disconnected at 20°C] • Evaporative Emission System (EVAP) Monitoring Processor Performance – Duty Cycle (PWM (%)): 5 - 95 % (modulates with target) [Condition: Engine running, actuator in control] • Evaporative Emission System (EVAP) Monitoring Processor Performance – Supply Voltage (Voltage (V)): 11.8 - 14.4 V [Condition: Ignition ON at connector] Oscilloscope: Capture the PWM control signal. The square wave must have clean edges, a stable frequency (typically 30 - 200 Hz), and a distinct flyback spike on every switch-off. (Scale: 2 ms/div, 20 V/div)

What are the symptoms of fault code P260F?

Subsystem operating efficiency falls below calibrated threshold Check Engine Light (MIL) illuminated Possible drivability or power reduction Risk of failing an emissions inspection

What causes fault code P260F?

Most likely: Evaporative Emission System (EVAP) Monitoring Processor Performance is electrically operational but performing outside calibrated tolerance Likely: Chafed or pinched wiring harness along the signal path to Evaporative Emission System (EVAP) Monitoring Processor Performance Possible: Internal mechanical wear or carbon deposits inside Evaporative Emission System (EVAP) Monitoring Processor Performance Rare: Defective internal output driver or reference circuit in the control module for Evaporative Emission System (EVAP) Monitoring Processor Performance

How do you fix fault code P260F?

Verify underlying mechanical operation and rule out blockage, vacuum leaks, or mechanical binding. Verify loaded supply voltage and harness terminal pins at Evaporative Emission System (EVAP) Monitoring Processor Performance. Check circuit continuity and ground-side voltage drop (< 0.05 V) for Evaporative Emission System (EVAP) Monitoring Processor Performance. Check supply and the low-side driver at the ECM connector. Replace the actuator or repair the circuit based on the readings. Mechanic tip: Use the scan-tool output test with the scope on the control side at the same time. If duty changes but the actuator does not move, the valve is stuck — not the electrical fault you were chasing.

Standard EOBD

P260F - Fordampingsutslipp (EVAP) Monitoring Processor – urimelig verdi

Relatert:Fordampingsutslipp (EVAP) Monitoring Processor, Ledningsnett og kontakter, Styreenhet (ECM/PCM)

System

Drivlinje (Motor og girkasse)

Kontakt oss Finn reparasjon

Teknisk beskrivelse

Styreenheten registrerer en feil i Fordampingsutslipp (EVAP) Monitoring Processor (P260F).

Multimeter Målepunkter & Nominelle Verdier

Målepunkt / Komponent	Måletype	Nominelt Målområde	Målevilkår
Fordampingsutslipp (EVAP) Monitoring Processor – spolemotstand	Motstand (Ω)	3 - 30 Ω	Frakoblet ved 20°C
Fordampingsutslipp (EVAP) Monitoring Processor – arbeidssyklus	PWM (%)	5 - 95 %	Motor i gang

Fordampingsutslipp (EVAP) Monitoring Processor – spolemotstandMotstand (Ω)

Børverdi:3 - 30 Ω

Frakoblet ved 20°C

Fordampingsutslipp (EVAP) Monitoring Processor – arbeidssyklusPWM (%)

Børverdi:5 - 95 %

Motor i gang

Oscilloskop Kurveformanalyse

2 ms/div, 20 V/div

Registrer PWM-styresignalet; rene flanker, stabil frekvens og flyback-spiss.

Mulige årsaker

Fordampingsutslipp (EVAP) Monitoring Processor fungerer elektrisk, men yter utenfor toleranse

Gnagd eller klemt ledningsnett fram til Fordampingsutslipp (EVAP) Monitoring Processor

Mekanisk slitasje eller sotbelegg i Fordampingsutslipp (EVAP) Monitoring Processor

Defekt driver eller referanseutgang i styreenheten for Fordampingsutslipp (EVAP) Monitoring Processor

Symptomer

Systemets virkningsgrad faller under kalibrert grense

Motorlampe (MIL) lyser

Mulig redusert kjørbarhet eller effekt

Risiko for underkjent EU-kontroll

Anbefalt tiltak

Sjekk mekanisk grunnfunksjon og utelukk lekkasjer eller tette kanaler.

Sjekk matespenning og kontaktstykke ved Fordampingsutslipp (EVAP) Monitoring Processor.

Mål kontinuitet og jordspenningsfall (< 0.05 V) for Fordampingsutslipp (EVAP) Monitoring Processor.

Sjekk matning og driver i ECM-kontakten.

Mekanikerens tips

Bruk skannerens aktuatortest med oscilloskop på styresiden samtidig. Endres duty uten mekanisk respons, har ventilen kjørt seg fast.

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Drivstoffinjektor styring trykk Regulator – høyt signal

Målepunkt / Komponent

Måletype

Nominelt Målområde

Målevilkår

Fordampingsutslipp (EVAP) Monitoring Processor – spolemotstand

Motstand (Ω)

3 - 30 Ω

Frakoblet ved 20°C

Fordampingsutslipp (EVAP) Monitoring Processor – arbeidssyklus

PWM (%)

5 - 95 %

Motor i gang