Powertrain, generic (extended)

P2737 Pressure Control Solenoid F Control Circuit Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

The standard title describes implausible readings on the control circuit of solenoid F that are neither a clean open nor a short. GM's 2025 table 25OBDG03A fills the code with a hydraulic test on its CVT, where valve F switches the binary oil pump between half and full capacity. With the vehicle below 2 mph, accelerator released, engine between 600 and 1,200 rpm, fluid above 50 °C and the garage shift finished, the TCM compares the averaged pressures from the primary and secondary pulley sensors in both pump modes. If the differences stay too large, the valve is judged not to follow its command; GM classes this Type B, so the MIL comes on after two trips. Other makers do not publish P2737. A failed pump valve can reduce clamping pressure and lead to belt slip.

Likely causes

Binary pump control valve sticking (GM CVT)
Primary or secondary pulley pressure sensor reading wrong
Low or degraded CVT fluid
High resistance in the solenoid F circuit

Symptoms

  • MIL on after two trips
  • Belt slip, flare or reduced power
  • Whine from the CVT

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€150–4,500
Time1–12 h

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

Parts involved

pressure control solenoid fwiring harness

Related codes

P2736P2738P2739P2728P0841

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