P2731

Code

Generic P — Powertrain

Pressure Control Solenoid F

Brand: Generic

Type: P — Powertrain

Views: UK: 37 EN: 53 RU: 35

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Open or shorted wiring in the solenoid F circuit
Corroded, loose or damaged connector at the solenoid or PCM
Failed/shorted pressure control solenoid F
Blown fuse or poor power/ground supply to transmission control circuits
Low, dirty or incorrect transmission fluid causing valve/solenoid sticking
Internal transmission hydraulic/mechanical fault preventing expected pressure change

Read and record all stored codes and freeze-frame data with a scan tool
Inspect transmission fluid level and condition (color, smell, contamination)
Visually inspect wiring harness and connectors for damage, corrosion, or disconnection at solenoid F and PCM
Backprobe solenoid connector and monitor power/ground while commanded by scan tool
Measure solenoid coil resistance with connector disconnected and compare to spec
Check for continuity and shorts between solenoid circuit, ground, and battery (+)

Typical solenoid coil resistance (approx.): 20–40 ohms (vehicle-specific)
Operating voltage: ~12 V supply; solenoid controlled by PCM via PWM
Command signal: PWM duty cycle 0–100% (varies with load/gear), frequency commonly ~70–250 Hz
Expected current draw: ~0.3–1.5 A depending on coil impedance

Connect scan tool, read/reset codes and record freeze-frame and live data for solenoid F
Verify transmission fluid level/condition; top/replace fluid if severely contaminated
Perform visual inspection of solenoid F connector and harness for damage or corrosion; repair as needed
Disconnect battery negative if performing connector/repair work per safety procedures
With ignition on (engine off), backprobe solenoid connector: verify constant 12 V supply (or ignition-switched power) and a valid ground/PCM control signal when commanded
Measure solenoid coil resistance with connector unplugged; compare to manufacturer spec—replace if out of range or open/shorted
Check continuity from solenoid pin to PCM pin; check for shorts to ground or battery.
If wiring and power/grounds are good, apply bench 12 V (or use diagnostic actuator) to the solenoid to confirm mechanical operation (listen/feel for click or use pressure tests where applicable)
If solenoid operates on bench and wiring/PCM signals are correct, suspect internal hydraulic issue in valve body or PCM driver fault—perform further transmission diagnostics or module testing
After repair or replacement, clear codes and test drive to confirm repair; monitor for reoccurrence