P2754
Transmission Fluid Cooler Control Circuit Low
Automatic transmission (cooling)
Generic OBD-II
Medium
What it means
P2754 means the control module has detected low voltage (typically a short to ground) in the transmission fluid cooler control circuit. This circuit manages active cooling of the transmission fluid, so a fault mainly risks the fluid running hotter than normal under load — the engine and transmission still operate, but overheating over time can cause damage.
Medium
Can I keep driving? Drivable, but the transmission cooler control may not work, risking overheating under heavy load. Avoid towing until fixed.
Common symptoms
What you'll notice
- Check-engine light on
- Transmission running hotter than normal, especially under load or towing
- Possible fluid-temperature warnings
- Often no symptom under light, cool-weather driving
Common causes
Most likely first
- Short to ground in the transmission fluid cooler control circuitLikely
- Faulty cooler control valve, bypass valve, or actuatorCommon
- Open, damaged, or corroded wiring or connectorCommon
- Poor ground or a fault in the control module driverLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and inspect the cooler control circuit wiring and connector for a short to ground or damage.
- Check the cooler control valve/actuator operation when commanded with a scan tool.
- Verify supply voltage and ground at the actuator.
- Repair wiring or replace the control valve/actuator as indicated, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with P2754?+
Light driving is usually okay, but the cooler control may be inactive, so avoid towing or heavy load that could overheat the transmission until it's fixed.
Can I just clear P2754?+
It will return until the circuit fault or control valve problem is repaired.
Related codes
Often seen with P2754
Read & clear P2754 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX