Transmission Fluid Cooler Control Circuit/Open
What it means
P2753 means the PCM detected an open (broken) electrical circuit in the transmission fluid cooler control system — the valve or solenoid that manages fluid flow through the transmission cooler. With the circuit open, cooling may not be regulated, so the transmission can run hotter than normal, especially under load. It's an electrical fault in the cooling control, not a sensor or shift-solenoid problem, and does not affect engine starting.
Can I keep driving? Driveable, but with the cooler control open the transmission may not be cooled properly, so avoid heavy loads and towing until it's fixed.
Common symptoms
What you'll notice
- Check-engine light on
- Transmission running hotter than normal
- Cooler bypass/flow not regulated
- Over-temperature warnings under load
Common causes
Most likely first
- Open circuit — broken wiring or a poor connection in the cooler control circuitLikely
- Faulty transmission fluid cooler control valve or solenoidCommon
- Blown fuse or bad groundCommon
- Corroded or loose connectorLess often
- Faulty TCM/PCMLess often
How to diagnose & fix
Work through it in order
- Scan and confirm the code, then inspect the cooler control valve wiring and connector for an open.
- Check the circuit fuse and ground.
- Test the cooler control valve/solenoid for correct resistance and operation.
- Repair wiring or replace the valve as needed.
- Clear the code and re-test, watching transmission temperature under load.
FAQ
Quick answers
Is it safe to drive with P2753?+
Can I just clear P2753?+
Related codes
Often seen with P2753
Read & clear P2753 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.