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Home / DTC / P2811 — Pressure Control Solenoid G Intermittent

P2811 — Pressure Control Solenoid G Intermittent

Detailed page for trouble code P2811.

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Code

P2811

Generic P — Powertrain

Pressure Control Solenoid G Intermittent

Brand: Generic
Type: P — Powertrain
Views: UK: 13 EN: 30 RU: 15
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Page language: EN

Causes

  • Intermittent wiring or connector fault (corrosion, loose terminal, pin pushed out)
  • Intermittent ground or power supply to the solenoid circuit
  • Intermittent internal solenoid coil fault
  • Faulty transmission control module (rare)
  • Poor mechanical seating of the solenoid in the valve body
  • Intermittent short to battery or short to ground when harness moves

Symptoms

  • Harsh or erratic shifting
  • Delayed or slipping shifts under load
  • Transmission limp-in or reduced performance mode (may be intermittent)
  • Transmission warning light (MIL/Check Engine) or transmission lamp
  • Intermittent shift flare, flare on acceleration or deceleration

What to check

  • Retrieve freeze frame and freeze-data with a scan tool; note operating conditions when the code sets
  • Perform a wiggle test on the wiring harness and connector while monitoring live solenoid status
  • Visually inspect solenoid connector and pins for corrosion, bent pins, or contamination
  • Check for stored or pending related transmission codes or multiple solenoid codes
  • Measure connector terminal voltages and ground with key on/engine running or during commanded activation
  • Measure solenoid coil resistance at connector (compare to manufacturer spec)

Signal parameters

  • Typical solenoid coil resistance (cold): commonly 6–30 ohms (varies by model) — consult vehicle spec
  • Supply voltage: ~12 V battery to solenoid power circuit when energized (drive voltage is PWM switched by TCM)
  • Control signal: PWM duty cycle 0–100% as commanded by the transmission controller
  • PWM frequency: commonly 50–500 Hz depending on manufacturer; confirm with vehicle-specific data
  • Intermittent behavior: voltage or duty cycle may drop to 0 V or show noisy/erratic waveform when fault is present

Diagnostic algorithm

  1. Read and record all transmission codes and freeze frame data. Clear codes and perform a test drive to attempt to re-create the code.
  2. Visually inspect the solenoid connector and harness for damage, corrosion, loose pins, or fluid intrusion. Repair as needed.
  3. With ignition on (engine off) measure battery voltage at the solenoid power terminal and check for a good ground at the ground terminal.
  4. Measure solenoid coil resistance at the connector then wiggle the harness while monitoring resistance for intermittent changes. If resistance fluctuates or is out of spec, consider solenoid or harness repair.
  5. Back-probe the control wire and use a lab scope or quality scan tool to monitor the PWM waveform while commanding the solenoid on/off. Look for missing pulses, noisy waveform, or intermittent loss of signal.
  6. If waveform is intermittent only with harness movement, repair or replace the damaged wiring or connector and retest.
  7. If wiring and connector are good but signal from the TCM is intermittent, check TCM grounds and power feeds. Verify other TCM-driven circuits for similar issues.
  8. If wiring and TCM outputs are good and the fault persists, remove and bench-test or replace the pressure control solenoid and re-test.
  9. After repairs, clear codes and perform a full drive cycle and re-check for return of the fault.

Likely causes

  • Damaged or corroded connector at the solenoid
  • Broken or chafed wire in the harness near flex points or transmission case
  • Solenoid intermittent coil windings (internal intermittent)
  • Poor ground at transmission/engine harness
  • Intermittent driver output in the TCM

Fault status

⚠️ Status
Intermittent fault detected on Pressure Control Solenoid G circuit. The transmission controller observed irregular or missing control signal to solenoid G. Investigate wiring, connector, solenoid, and controller outputs; confirm with live data before replacement.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

Similar codes

P2810 P2812 P0751 P0778
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