P2729
Pressure Control Solenoid E Control Circuit Low
Transmission controls
Generic OBD-II
Medium
What it means
P2729 means the control circuit for transmission pressure control solenoid E is reading low — typically a short to ground or an open. These solenoids regulate the hydraulic pressure that applies clutches, so the fault can cause slipping, harsh shifts, or a protective failsafe mode. It affects the transmission, not engine starting.
Medium
Can I keep driving? Usually yes, but shifts may feel harsh or slip — a pressure-control fault can trigger failsafe mode. Get it serviced before it worsens.
Common symptoms
What you'll notice
- Check-engine light on
- Harsh, delayed, or slipping shifts
- Transmission entering failsafe/limp mode
- Possible reduced fuel economy
Common causes
Most likely first
- Faulty pressure control (EPC) solenoid ELikely
- Short to ground or open in the solenoid control wiringCommon
- Corroded or loose connector at the transmissionCommon
- Dirty or contaminated transmission fluid affecting the solenoidLess often
- Faulty TCM/PCM (least likely)Less often
How to diagnose & fix
Work through it in order
- Scan for related codes (P2727, P2728, P2730) and read freeze-frame.
- Check transmission fluid level and condition; service if dirty.
- Inspect the transmission connector and wiring for shorts to ground or opens.
- Measure the solenoid's resistance and circuit values against spec.
- Replace the pressure control solenoid (usually in the valve body) if faulty; verify the module last.
FAQ
Quick answers
Is it safe to drive with P2729?+
You can usually drive gently to a shop, but slipping or harsh shifts risk further transmission wear. Don't tow or make long trips until it's fixed.
Can I just clear P2729?+
It returns until the solenoid or circuit is repaired, and shift quality stays affected.
Related codes
Often seen with P2729
Read & clear P2729 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