P2753
Transmission Fluid Cooler Control Circuit / Open
The controller cannot drive the transmission fluid cooler control valve or fan. Active cooling cannot be commanded so transmission fluid temperature can rise during heavy use.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Common causes
Ordered by how often each turns out to be the cause.
- Open coil in cooler control solenoidCommon
- Broken control wirePossible
Parts involved
- Trans Fluid Cooler Valve
- Cooler Fan
- Wiring Harness
P2753 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.