OBD-II Code
P2705
Severity
Not yet reviewed
Nobody on our side has assessed this code yet, so we are not going to guess at how serious it is.
Can you drive it
We cannot say
Treat it as unknown until a shop reads it with live data. If the check-engine light is FLASHING, stop driving as soon as it is safe to — that means an active misfire, whatever the code.
Indicative cost (USD)
$400–$6,000
From this code's diagnostic notes. Varies by vehicle, diagnosis, parts, and local labor. This is not a repair quote.
P2705 is the apply-time monitor on Friction Element F — the sixth and final independently monitored clutch or band in the gearset.
How a shop works this
Work from evidence to part, not the other way round. A code names a circuit or a symptom; it does not name the part that failed.
Note every code that is set, not just this one.
Codes that appear together usually narrow the cause faster than any one of them read alone.
Read the freeze frame — the conditions the fault was recorded under.
Cold or warm, idle or load, road speed and engine speed. A fault that only appears cold is a different fault from one that only appears under load, even with the same code on the scanner.
Confirm the fault is current rather than history.
Clear the code and see whether it returns under those same conditions. A code that does not come back may have been logged during a repair, a flat battery, or a bad connection that has since been disturbed.
Then follow the diagnostic notes further down this page, in the order they are written.
They are written in the order a shop works this code, cheapest checks first. Where they name a component, inspect its wiring and connector before replacing it.
If the code comes back after a repair, the underlying fault is still there. That is the point to bring in a scanner with live data and freeze-frame, or a shop that has one.
Common symptoms
- Check engine light
Read the full diagnostic procedureP2705 is the apply-time monitor on Friction Element F — the sixth and final independently monitored clutch or band in the gearset.
P2705 is the apply-time monitor on Friction Element F — the sixth and final independently monitored clutch or band in the gearset. By the time a trans has six monitored elements, you're in 8-speed territory (ZF 8HP, Aisin AS69RC) or 10-speed (Ford 10R80, GM 10L80/10L90) territory, and the monitoring is sophisticated enough that the TCM is checking both apply time and release time for each element on every shift event.
Same logic
350-500 ms target window, 700-1000 ms fault threshold. Cheapest-first ladder: verify fluid (level, color, smell — burned fluid alone explains most P27xx codes regardless of element number); capture turbine/output RPM data during the failing shift on a bidirectional scanner; mechanical line-pressure test at idle (60-90 psi DRIVE) and WOT (180-260 psi commanded); scope the PCS feeding Element F for coil integrity (8-30 ohms cold) and drive current (0.5-1.5 A nominal); confirm hydraulic dwell at apply (200-400 ms typical between command and measured RPM convergence). On 10-speeds specifically, watch for cross-leak between adjacent solenoid circuits at the lead-frame — a single bad insulator can throw two element codes simultaneously. Caveat: friction-element apply-time codes mean internal hydraulic delay — solenoid is cheapest, valve-body sealing rings and bore wear is medium, worn clutch packs is expensive. Always pressure-test BEFORE teardown; $400+ in labor before any teardown parts are even sourced.
Vehicle-specific patterns2017+ Ford 10R80 in F-150, Mustang, Bronco, and Expedition sees P2705 most often from the same lead-frame cross-leak that produces P2704 — Ford issue…
- 2017+Ford 10R80 in F-150, Mustang, Bronco, and Expedition sees P2705 most often from the same lead-frame cross-leak that produces P2704 — Ford issued multiple calibration updates between 2017 and 2020 to widen the monitor windows on early-build units.
- 2017+GM 10L80/10L90 (Silverado, Tahoe, Yukon, Camaro ZL1) shares about 80% of its architecture with the 10R80 (jointly developed program) and shows similar P2705 patterns at the F element.
- 2014+ZF 8HP70/8HP75 throws P2705 from F-clutch wear when fluid service is skipped past 60-80k miles.
- 2013+Aisin AS69RC behind the Cummins 6.7L (Ram 2500/3500) throws P2705 in heavy-tow service when the F element (Aisin's mapping varies) experiences sustained heat soak. Mercedes 7G-Tronic 722.9 in its later evolutions throws P2705 from conductor-plate failures cascading across multiple solenoid circuits.
Estimated repair$400 to $6,000.
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