P2704
Transmission Friction Element E Apply Time Range/Performance
Automatic transmission
Generic OBD-II
Medium
What it means
P2704 means the transmission's 'E' friction element (a clutch or band) is taking too long, or too short a time, to apply compared with what the control module expects. The engine still starts and runs, but shifts may be harsh, delayed, or slipping — and prolonged slipping can cause internal wear, so it's best diagnosed promptly.
Medium
Can I keep driving? Drivable, but expect harsh, slipping, or delayed shifts. Prolonged slipping can damage the transmission, so address it soon.
Common symptoms
What you'll notice
- Check-engine light on
- Harsh, delayed, or slipping gear shifts
- Transmission may enter limp mode (limited gears)
- Higher transmission temperatures or reduced fuel economy
Common causes
Most likely first
- Low or dirty/degraded transmission fluidLikely
- Worn friction element (clutch/band) 'E' or its apply circuitCommon
- Sticking or faulty shift/pressure control solenoid or valve body wearCommon
- Internal fluid leak reducing apply pressureLess often
- Faulty speed sensors or PCM/TCM (less likely)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and check transmission fluid level and condition first.
- Scan for companion solenoid or ratio codes that point to the failing circuit.
- Inspect wiring and connectors to the transmission solenoids for damage or corrosion.
- If fluid and wiring are good, the valve body or friction element may need internal inspection by a transmission specialist.
FAQ
Quick answers
Is it safe to drive with P2704?+
Short trips may be okay, but slipping or harsh shifts can worsen and damage the transmission. Have it checked before extended driving.
Can I just clear P2704?+
It will return until the fluid, solenoid, or internal apply fault is corrected — clearing it can also hide worsening damage.
Related codes
Often seen with P2704
Read & clear P2704 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