What it means
Voltage on the pressure control solenoid E control line is above the expected window. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
At a glance
- Usually lights the check-engine light
How it works
Pressure control solenoid E is an electrically operated valve that helps regulate transmission fluid pressure. The transmission control module sets P2730 when voltage in solenoid E's control circuit rises above the expected range, which can occur if the control wire contacts battery voltage or the solenoid coil is open.
Common causes
Most likely first.
- Control wire shorted to B+
- Open solenoid coil
- Connector pins corroded - high contact resistance
Symptoms
- Check-engine or transmission warning light on
- Harsh or delayed shifts
- Slipping or reduced drive
- Transmission may enter limp mode
How to diagnose it
- Record freeze-frame data and related transmission codes to see when the solenoid E circuit voltage was high.
- Inspect solenoid E's connector and harness for chafing, water intrusion, loose or pushed-back pins, and corrosion.
- With a scan tool monitoring the circuit, gently move accessible harness sections to check for an intermittent change in the fault.
- Test solenoid E's control wire for a short to battery voltage and check the coil for an open, using the manufacturer's procedure.
- If the wire and coil pass, inspect connector terminal contact and measure circuit voltage drop to find a high-resistance connection.
Common fixes
- Repair a control wire shorted to battery voltage.
- Clean or replace corroded connector terminals and restore the connector seal.
- Repair a pushed-back or loose solenoid E terminal.
- Replace solenoid E if its coil is open.
Can I keep driving?
Limit driving to short, gentle trips if shifts are still predictable; avoid towing and hard acceleration because reduced pressure control can cause slipping. Stop if drive becomes unreliable or the transmission repeatedly slips.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.