P2706

Shift Solenoid "F"

Severity: High
Driving: Drive only to a garage

A fault in shift solenoid "F". Shift solenoids are the valves that route hydraulic pressure to the clutches that make each gear, so the gears depending on this one become unavailable and the transmission will usually hold a single gear.

Possible causes

CommonDebris in the fluid jamming the solenoid
CommonFailed solenoid
CommonCorroded transmission case connector, or fluid wicking into it
CommonLow or degraded fluid
PossibleInternal transmission harness failure
PossibleSticking valve in the valve body bore

What you might notice

Transmission stuck in one gear
Harsh, delayed or flaring shifts
Slipping under load
Missing gears
Check engine light on

What to check, in order

Note which gears you can and cannot reach. The pattern of missing gears tells a specialist a great deal and costs nothing to observe.
Check the fluid level and condition first. It is the cheapest check and it explains more transmission complaints than every electrical fault combined.

Read this code from your own car

Plug an ELM327 adapter into the OBD-II port under the dashboard. Pin16 reads every stored, pending and permanent code, explains each one like this page does — offline, with no account — and shows what the car recorded when the fault was set.

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Where this code sits

B · Body C · Chassis P · Powertrain U · Network and communication