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Home / DTC / P2736 — Pressure control solenoid F - open circuit

P2736 — Pressure control solenoid F - open circuit

Detailed page for trouble code P2736.

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Code

P2736

LAND ROVER P — Powertrain

Pressure control solenoid F - open circuit

Brand: LAND ROVER
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or broken wiring between the solenoid and TCM
  • Corroded, bent or disconnected connector pins at the solenoid or TCM
  • Failed pressure control solenoid F (coil open)
  • Poor or missing ground or fused supply to the transmission solenoids
  • Internal valve body or connector assembly damage in the transmission
  • Faulty transmission control module (rare) or intermittent TCM connector problem

Symptoms

  • Transmission fault lamp (TCM/Check Engine) illuminated
  • Reduced transmission performance or limp/heavy shift mode
  • Harsh, delayed, or no shifts in affected gears
  • Stored transmission-related trouble codes
  • Possible inability to move or restricted gear selection

What to check

  • Read freeze frame and related transmission codes with a capable scan tool
  • Visually inspect the solenoid connector and wiring for damage, corrosion or pin issues
  • Backprobe the solenoid connector while commanding the solenoid with a scan tool
  • Measure solenoid coil resistance with a multimeter and compare to vehicle specs
  • Check for continuity between the solenoid connector and the TCM connector
  • Verify supply voltage and ground at the solenoid connector when solenoid is commanded

Signal parameters

  • Solenoid coil resistance: typically a low ohm value (e.g., tens of ohms) — check vehicle-specific data
  • Command type: PWM (pulse-width modulated) or switched supply from the TCM — duty cycle varies with load
  • Supply voltage when commanded: near battery voltage (~12 V) at connector when activated (depends on circuit design)
  • Open-circuit symptom: infinite/very high resistance or no voltage present when commanded
  • Current draw: typically under a few amps; abnormal zero or very high current indicates fault

Diagnostic algorithm

  1. Connect a professional scan tool. Retrieve freeze frame data and all related transmission codes; note whether the code is current or historic.
  2. Visually inspect the transmission solenoid F connector and adjacent wiring for corrosion, damage, pin push-out, or water ingress. Repair obvious damage.
  3. With ignition on (engine off) backprobe the solenoid connector. Command the solenoid on/off with the scan tool while observing voltage and/or PWM signal. Note behavior.
  4. Measure coil resistance at the solenoid connector with the harness disconnected. Compare to the manufacturer specification. An open (infinite) reading indicates a failed coil or open wiring.
  5. Check continuity from the solenoid pin(s) to the TCM connector pin(s). Repair any open sections of wiring or poor crimps. Check for shorts to ground or battery where applicable.
  6. Verify supply fuse/relay and transmission ground integrity. Repair/replace as needed.
  7. If wiring and supply are good but solenoid resistance is out of spec or open, replace the pressure control solenoid (or valve body assembly per service manual).
  8. If solenoid and wiring test good but the TCM does not command or read the circuit correctly, consult manufacturer procedures for TCM testing/diagnosis — consider TCM connector, pins, or module replacement only after confirming wiring/solenoid integrity.
  9. After repairs, clear codes, perform a functional/road test and re-scan to confirm the fault does not return.

Likely causes

  • Damaged harness where it rubs/chafes (open when moved)
  • Corrosion/water ingress in the transmission electrical connector
  • Solenoid coil has failed open
  • Connector pin pulled out or pushed backed out of the housing
  • Blown fuse or relay feeding transmission solenoids
  • Poor ground at transmission case or battery negative

Fault status

⚠️ Status
P2736 — Pressure control solenoid F: open circuit detected. TCM has detected loss of solenoid signal or infinite resistance on the solenoid circuit; transmission may go into limp mode.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

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413

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