P2737 means the transmission control module has detected that the pressure control solenoid F circuit is not performing within its expected electrical range or performance limits. This solenoid helps regulate hydraulic line pressure inside the transmission, so a fault can affect shift quality and pressure control.
The solenoid itself may have an internal short, open circuit, or degraded performance, causing the TCM to detect out‑of‑range operation.
Damaged, chafed, or corroded wires between the TCM and solenoid can create abnormal resistance or voltage, triggering the code.
Poor connection at the solenoid plug can increase resistance or cause intermittent signal loss, leading to a range/performance fault.
Insufficient fluid level or fluid with debris/oxidation can affect hydraulic pressure, making the solenoid appear to underperform.
A restriction or sticking valve in the valve body can prevent proper pressure regulation, causing the TCM to see abnormal solenoid behavior.
Only considered after wiring, solenoid, fluid, and valve body checks; a defective TCM rarely causes this code and is often misdiagnosed.
No. The PCM/TCM is rarely the cause of this code. Most cases are due to a faulty solenoid, wiring/connector issues, or fluid condition. Replace the PCM only after those components have been verified good.
Continued driving with abnormal line pressure can lead to harsh shifts, overheating, or accelerated wear. It is advisable to diagnose and repair the issue promptly to avoid potential damage.
Clearing the code will turn off the check engine light, but if the underlying fault remains the code will likely return. Proper diagnosis should be performed before relying on a cleared code.