P2735

Code

Generic P — Powertrain

Pressure Control Solenoid F Intermittent

Brand: Generic

Type: P — Powertrain

Views: UK: 29 EN: 29 RU: 23

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Page language: EN

Causes

Intermittent open or short in solenoid F wiring (broken wire, damaged insulation, chafing)
Loose, corroded or contaminated connector at the solenoid or transmission harness
Faulty pressure control solenoid F (intermittent coil or internal contact)
Poor or intermittent ground or supply voltage to solenoid circuit
Intermittent TCM/PCM driver or internal fault
Low or contaminated transmission fluid causing intermittent hydraulic behaviour

Symptoms

Check Engine / MIL illuminated (transmission-related DTC)
Harsh, delayed or erratic shifting
Transmission may slip, hunt between gears or enter limp/limitation mode
Unexpected downshifts or upshifts
Possible abnormal transmission noise under load

What to check

Retrieve freeze frame and complete DTC data from scan tool; note occurrence and driving conditions
Check for additional transmission-related DTCs or pending codes
Visually inspect transmission fluid level, color and smell (burnt or contaminated fluid)
Inspect wiring and connector for solenoid F for corrosion, damage or loose pins
Backprobe connector and monitor solenoid circuit voltage and ground while operating
Measure solenoid coil resistance with a multimeter (compare to manufacturer spec)

Signal parameters

Solenoid coil resistance typically in a low-ohm range; common OEM specs ~5–40 ohms (check vehicle-specific spec before replacing)
Control signal usually a PWM voltage from TCM/PCM (0–12 V) with duty cycle 0–100% depending on commanded pressure
Typical PWM frequency varies by manufacturer (often 70–300 Hz); check vehicle service data
Steady DC voltage near battery voltage when solenoid is commanded on in some designs, or pulsed control in others
No-load continuity to ground should be stable; intermittent open or very high resistance indicates fault

Diagnostic algorithm

Read DTCs and freeze frame data; note when code set and any related codes.
Inspect transmission fluid level/condition; correct fluid issues before electrical replacement.
Visually inspect the solenoid F connector and wiring for damage, corrosion, or loose pins; repair any issues found.
With harness disconnected, measure solenoid coil resistance at the connector and compare to spec. An intermittent or out-of-spec reading suggests a faulty solenoid.
Reconnect and backprobe the solenoid connector. With a good scan tool, command the solenoid on and off while watching voltage, duty cycle and response. Look for intermittent loss of signal or unstable duty.
Wiggle the harness and connectors while monitoring live data and DTC status to reproduce intermittent behavior.
Check supply voltage and ground integrity to the solenoid circuit (voltage present when commanded, continuous good ground).
If wiring and connectors test good but problem persists, substitute a known-good solenoid (if available) or repair/replace solenoid F.
If solenoid replacement does not resolve intermittent faults, suspect TCM/PCM driver fault and confirm with module bench testing or dealer-level diagnostic procedures before replacing control module.
After repairs, clear codes and perform a road test and extended checks to confirm the intermittent condition is resolved.

Likely causes

Corroded connector or poor pin contact at solenoid F
Wire harness damage where it flexes (intermittent open/short when moved)
Solenoid coil developing intermittent connection or internal fault
Intermittent power/ground to the solenoid caused by a loose terminal
TCM/PCM driver intermittently failing (less common)

Fault status

⚠️ Status

Intermittent fault detected on Transmission Pressure Control Solenoid F circuit. Indicates unstable or interrupted control signal (open, short, poor connection, or intermittent solenoid/driver failure) affecting pressure regulation.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.5-3.5 hours