Powertrain, generic (extended)

P2734 Pressure Control Solenoid F Electrical

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P2734 is the catch-all electrical code for solenoid F: the driver stage notices coil current or voltage at odds with the command, without saying whether the line is broken, touching ground or touching battery voltage. Public documentation of P2734 by any maker is lacking. Those that publish data on valve F use the specific circuit codes instead: GM's 2025 table 25OBDG03A runs P2736, P2738 and P2739 on the same valve, which there feeds a clutch of the nine- or ten-speed, the line pressure circuit of the eight-speed or the binary pump of the CVT. Ford's 2024 summary maps the odd clutch cooling valve of its TR9070 dual-clutch unit to the same three codes. CARB counts such solenoids as comprehensive components whose circuits must be checked for faults.

Likely causes

Corroded, loose or damaged connector at the valve body
Chafed or broken wire in the solenoid F circuit
Faulty solenoid F coil
Faulty output stage in the TCM

Symptoms

  • MIL on with limp-home mode
  • Harsh, late or missing shifts

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–1,500
Time0.5–5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

pressure control solenoid fwiring harness

Related codes

P2731P2735P2736P2738P2739P2725

References: law.cornell.edu, gsi.ext.gm.com, fordservicecontent.com.