P2737 — Transmission pressure solenoid signal problem

The code indicates the transmission's pressure control solenoid F is sending a signal that doesn't match expected values. This usually means the solenoid circuit has an electrical fault or the solenoid itself is malfunctioning.

Common causes

The cause is almost always one of a few things. Here they are — P2737 rarely comes from anything outside this list:

• Faulty pressure control solenoid F
• Wiring issues or damaged connectors in solenoid circuit
• Transmission control module (TCM) malfunction
• Low or contaminated transmission fluid

Where to start

In the order a sensible mechanic would work — the cheap checks first, the expensive replacements only after:

1. Check and clean solenoid electrical connectors
2. Inspect wiring harness for damage or shorts
3. Test or replace pressure control solenoid F
4. Check and replace transmission fluid if dirty
5. Diagnose TCM if other fixes fail

That is what holds for P2737 in general. From here it depends on your engine — tell me which car it is and what it does, and I will give you the steps for it: real procedures, torque figures and diagrams instead of general advice.