P2722

Code

Generic P — Powertrain

Pressure Control Solenoid E

Brand: Generic

Type: P — Powertrain

Views: UK: 47 EN: 64 RU: 39

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Page language: EN

Causes

Open or shorted wiring in solenoid E circuit
Poor connector contact or corrosion at solenoid or control module
Failed pressure control solenoid (stuck, clogged, or open coil)
Low, dirty, or aerated transmission fluid
Faulty transmission control module (TCM) or engine control module (ECM)
Internal transmission hydraulic or valve body malfunction

Symptoms

Check Engine / Transmission light (MIL) illuminated
Harsh, delayed, or erratic shifting
Extended flare or slip on particular gear changes
Transmission may enter limp mode (limited gears)
Unusual transmission noise or poor drivability
Stored transmission-related fault codes

What to check

Retrieve freeze frame and live data with a scan tool; note conditions when code set
Check transmission fluid level, condition, and temperature
Visually inspect wiring and connectors to solenoid E and TCM for damage/corrosion
Measure solenoid coil resistance at the connector (engine off) and compare to spec
Backprobe connector with engine running to verify supply voltage and ground while commanding solenoid
Check for proper PWM duty cycle/frequency from the TCM with an oscilloscope or scan tool

Signal parameters

Coil resistance (typical): ~8–40 ohms depending on application — consult vehicle spec
Supply voltage: ~12 V battery when commanded (or switched + voltage present at feed circuit)
Control signal: PWM output from TCM; typical frequency range 20–300 Hz
Duty cycle: 0–100% depending on commanded pressure; PID should change duty when commanded
Expected response: pressure or shift behavior should change with varying commanded duty

Diagnostic algorithm

Confirm code and record freeze frame/live data. Check for other transmission codes that may relate.
Verify transmission fluid level, smell, and color. Top or replace fluid if severely low/contaminated and retest.
Visually inspect solenoid E connector and wiring for damage, corrosion, looseness, or pin push-out.
With ignition off, disconnect solenoid harness and measure coil resistance between the solenoid terminals. Compare to factory spec.
With harness connected, backprobe the connector. With ignition on/engine running, check for battery feed at the supply pin and stable ground at the control pin.
Command the solenoid on and off using a scan tool while observing voltage/ground and/or oscilloscope waveform for PWM frequency and duty changes. Verify the solenoid responds (pressure/shift change) when commanded.
If wiring and control signals are good but solenoid does not respond or resistance is out of range, replace solenoid E and retest.
If replacement solenoid does not restore proper operation and wiring/signals are correct, inspect valve body and internal hydraulics for blockage or sticking spool. Consider transmission service.
If all electrical and mechanical checks pass but fault returns, consider TCM diagnostics, reprogramming, or replacement per manufacturer procedures.
After repairs, clear codes and perform a road test and extended checks to confirm the issue is resolved.

Likely causes

Damaged or chafed harness to solenoid E
Corroded pins at solenoid connector or TCM connector
Solenoid coil resistance out of specification or intermittent
Debris in valve body preventing spool movement
Low fluid level or degraded fluid causing slow/erratic operation
TCM driver failure or software fault

Fault status

⚠️ Status

Transmission control detected abnormal operation of Pressure Control Solenoid E (circuit or performance). Immediate diagnosis of wiring, solenoid, fluid, and control module recommended.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours

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