P2704
Transmission Friction Element E Apply Time Range/Performance
The time required to apply friction element E is outside the expected window.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
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.
- Worn clutch friction platesCommon
- Pressure control solenoid driftPossible
- Internal hydraulic leak in apply circuitPossible
Parts involved
- Friction Element E
- Hydraulic Control Unit
- Pressure Control Solenoid
P2704 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.