P075F
Transmission Fluid Level Too High
The transmission fluid level monitor reports overfill above the safe maximum. Causes range from incorrect refill at service to coolant intrusion via a failed transmission cooler. Overfilling can cause foaming, accelerated wear and seal damage from raised internal pressure.
- 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.
- Overfilled at last serviceCommon
- Coolant intrusion through a failed transmission coolerPossible
Parts involved
- Transmission Fluid
- Transmission Cooler
P075F 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.