What it means
The transmission control module monitors pressure control solenoid E and the hydraulic pressure it regulates. This code sets when the module detects a fault associated with solenoid E, though the title does not specify whether the fault is electrical or hydraulic.
At a glance
- Usually lights the check-engine light
How it works
Pressure control solenoid E is a transmission valve that the controller uses to adjust hydraulic pressure. P2722 identifies a fault associated with solenoid E, but the code title does not specify whether the problem is electrical or hydraulic, so diagnosis must check both its circuit and pressure response.
Common causes
Most likely first.
- Aged solenoid coil resistance drift
- Worn valve body bore around the solenoid
Symptoms
- Check-engine or transmission warning light on
- Harsh or delayed shifts
- Slipping or shuddering during shifts
- Transmission may enter limp mode
How to diagnose it
- Record freeze-frame data and scan for related transmission codes to determine whether the E-solenoid fault accompanies a particular shift or pressure-control event.
- Check transmission fluid level and condition using the vehicle's specified procedure, and inspect for leaks or contamination.
- Inspect solenoid E wiring and connector for loose terminals, corrosion, fluid intrusion, or harness damage.
- Review live commanded solenoid E operation and available pressure or gear data to see whether the transmission responds as expected.
- Test solenoid E coil and valve-body pressure response against the manufacturer's specification to distinguish an electrical fault from a sticking valve or worn bore.
Common fixes
- Repair loose, corroded, or damaged solenoid E wiring and connector terminals.
- Correct low fluid level or service degraded fluid when supported by the manufacturer's procedure.
- Replace pressure control solenoid E if its coil fails testing.
- Repair the valve body if testing confirms a sticking valve or worn solenoid bore.
Can I keep driving?
Avoid towing and hard acceleration if shifts are harsh or the transmission slips, and limit driving if it enters limp mode. Persistent pressure-control problems can overheat the fluid and damage clutches.
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.