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Home / DTC / P2726 — Pressure Control Solenoid E Intermittent

P2726 — Pressure Control Solenoid E Intermittent

Detailed page for trouble code P2726.

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Code

P2726

Generic P — Powertrain

Pressure Control Solenoid E Intermittent

Brand: Generic
Type: P — Powertrain
Views: UK: 10 EN: 15 RU: 16
AI status
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Page language: EN

Causes

  • Intermittent open or short in solenoid E wiring or connector
  • Corroded, loose or contaminated connector pins
  • Poor ground or supply voltage to the transmission solenoid harness
  • Internal intermittent failure in the pressure control solenoid E
  • Intermittent output or software fault in the Transmission Control Module (TCM/PCM)
  • Low or contaminated transmission fluid causing solenoid sticking

Symptoms

  • Check Engine / Transmission warning lamp illuminated (may be intermittent)
  • Erratic or harsh shifts, delayed engagement
  • Transmission slipping or hunting between gears
  • Vehicle may go into limp/limitation mode
  • Fault may clear and return sporadically

What to check

  • Read DTCs and freeze-frame data; note conditions when DTC set
  • Check for related transmission or electrical codes
  • Visually inspect solenoid E connector and wiring for damage, corrosion or looseness
  • Perform wiggle test on harness/connectors while monitoring live data or DTCs
  • Check transmission fluid level and condition
  • Measure solenoid coil resistance at the connector with ignition off

Signal parameters

  • Typical solenoid DC resistance: commonly ~6–50 ohms (varies by design; consult OEM spec)
  • Command style: PWM (pulse-width modulated) or switched ground; duty cycle varies 0–100%
  • Command frequency: commonly in tens to low hundreds of Hz for PWM solenoids (varies by vehicle)
  • Supply voltage when commanded: pulsed between 0 V and battery voltage (approx 12 V)
  • Expected behavior: stable PWM duty signal with clean high/low transitions and reliable continuity to solenoid

Diagnostic algorithm

  1. Retrieve and record all stored/transient DTCs and freeze-frame data. Clear codes and attempt to reproduce.
  2. Visually inspect solenoid E connector and harness route for damage, chafing, or corrosion. Repair any obvious issues.
  3. Check transmission fluid level and condition; correct if low/contaminated.
  4. With ignition off, measure DC resistance of solenoid E between the solenoid pins and compare to specification/range. Replace solenoid if out of range or intermittent.
  5. Backprobe the solenoid connector with ignition on and engine running (or with TCM commanding) to verify supply voltage and ground continuity. Observe for intermittent loss of supply or ground while wiggling harness.
  6. Use a scan tool to command the solenoid on/off and monitor live data; use an oscilloscope to confirm PWM waveform (clean duty cycle, expected frequency).
  7. Perform continuity and resistance checks from the TCM connector to the solenoid connector to identify intermittent opens or shorts; repair wiring as needed.
  8. If wiring and solenoid test good but intermittent persists, inspect/repair grounds and chassis connections, then consider TCM output driver fault—verify with TCM bench tests or replace TCM per OEM diagnostic procedures.
  9. After repairs, clear codes and road-test under conditions that previously set the code; re-scan to confirm repair.

Likely causes

  • Loose or corroded connector at solenoid E
  • Broken or intermittently shorting wire between solenoid and TCM
  • Intermittent internal solenoid coil failure
  • Poor ground at transmission harness
  • TCM output driver intermittent or fault

Fault status

⚠️ Status
P2726 — Pressure Control Solenoid E Intermittent: Transmission control module detected intermittent operation or circuit irregularity for solenoid E. May cause erratic shifting or limp mode; inspection of solenoid, wiring, connectors, grounds and TCM recommended.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-3.0 hours

Similar codes

P2720 P2721 P2722 P2723 P2724 P2725
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