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Home / DTC / P1836 — Pressure control valve open

P1836 — Pressure control valve open

Detailed page for trouble code P1836.

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Code

P1836

MITSUBISHI P — Powertrain

Pressure control valve open

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

Causes

  • Open or broken wiring in the pressure control valve circuit
  • Poor or corroded connector(s) at the valve or harness
  • Blown fuse or bad relay supplying the valve circuit
  • Failed pressure control valve / solenoid (open coil)
  • Poor or missing ground to the control circuit
  • Faulty PCM/ECU driver output

Symptoms

  • MIL / check engine light illuminated
  • Loss of proper pressure control (may cause limp mode or reduced performance)
  • Abnormal system operation related to the controlled circuit (e.g., transmission shift problems, turbo boost control, power steering symptoms depending on system)
  • Stored or repeating related DTCs

What to check

  • Read freeze frame and full code list with a scan tool; note operating conditions when fault set
  • Visually inspect valve connector and wiring for damage, corrosion, or loose pins
  • Check related fuses and relays for continuity and proper operation
  • Backprobe valve connector to verify supply voltage with key ON and engine running (if safe)
  • Measure coil resistance of the pressure control valve with connector disconnected
  • Check continuity to the PCM for the control and ground circuits

Signal parameters

  • Supply voltage: typically battery voltage at valve supply (approx. 11–14 V with engine running)
  • Control signal: PCM output may be PWM or switched ground; duty cycle 0–100% depending on system
  • Typical coil resistance (manufacturer-specific): commonly in the ~10–40 ohm range for many solenoids — consult service manual for exact spec
  • Expected continuity: near zero ohms from valve power to valve, open/infinite if coil open or connector disconnected

Diagnostic algorithm

  1. Connect a capable scan tool, record and clear codes, and attempt to re-run the fault to verify reproducibility.
  2. Visually inspect the valve, connector, and wiring for obvious damage, corrosion, or water ingress.
  3. With ignition OFF, disconnect the pressure control valve connector and measure coil resistance across the valve terminals; compare to factory spec. An open/infinite reading indicates a failed coil.
  4. Check for battery voltage at the valve power terminal with ignition ON; if absent, inspect related fuse/relay and power feed wiring.
  5. With connector connected and engine or ignition in required state, backprobe the control terminal to verify PCM output signal (voltage or PWM). If the PCM output is absent or stuck open, test continuity from PCM to valve and inspect PCM grounds.
  6. Perform a harness continuity check between the valve connector and PCM; repair any open circuits or damaged wiring.
  7. If wiring, connector, fuse, and supply are good but the coil is open, replace the pressure control valve.
  8. After repairs, clear codes, re-test system operation and road test to confirm the fault does not return. If problem persists and wiring/valve are verified good, consider PCM diagnosis or replacement per factory procedure.

Likely causes

  • Damaged connector or wiring harness to the pressure control valve
  • Failed pressure control valve (coil open)
  • Blown fuse or poor power supply to the valve
  • Intermittent PCM output or bad ground

Fault status

⚠️ Status
P1836 — Pressure control valve circuit open. The control module detects an open condition in the pressure control valve/solenoid circuit; check wiring, connector, fuse, and valve.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

Similar codes

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406

Browse 406 MITSUBISHI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

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