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DTC codes / Mitsubishi codes / P1495

P1495 · MitsubishiEVAP Ventilation Solenoid Circuit Fault

P1495 on Mitsubishi vehicles means the powertrain control module (PCM) has detected an electrical fault in the evaporative emission (EVAP) system's ventilation solenoid circuit. The PCM monitors the solenoid's control wire for expected voltage changes when commanded on and off, and it sets this code when the circuit stays open, shorted, or draws current outside the expected range.

SystemPowertrain
Code typeMitsubishi specific
SeverityLow
Fix difficultyIntermediate
AreaAuxiliary emission controls

Symptoms you may notice

  • Illuminated check engine light, often with no other symptoms
  • A faint fuel or gasoline odor around the rear of the vehicle after parking
  • Slight hissing or clicking from the rear of the car when the engine is running
  • Failed or incomplete EVAP monitor on an emissions test
  • Rough idle or slight hesitation in rare cases where the vent valve sticks open
  • Fuel smell in the cabin when the ventilation solenoid fails to seal

Common causes, most likely first

  1. Failed EVAP ventilation solenoid (vent valve) coil or internal seal
  2. Damaged, corroded, or disconnected electrical connector at the vent solenoid
  3. Broken, chafed, or shorted wire in the solenoid control circuit
  4. Blown fuse or corroded terminal in the underhood fuse/relay box feeding the solenoid
  5. Faulty PCM driver circuit (rare but possible after other causes are ruled out)
  6. Contamination or debris blocking the vent solenoid, causing it to stick
  7. Corroded ground connection shared with the EVAP system

How to diagnose and fix it

  1. Use an OBD-II scan tool to confirm P1495 is active and check for related EVAP codes
  2. Inspect the vent solenoid connector and wiring for corrosion, damage, or looseness
  3. Measure resistance across the vent solenoid terminals and compare to the manufacturer's specification
  4. Check for battery voltage at the solenoid connector with the key on and verify the ground circuit
  5. Command the vent solenoid on and off with a scan tool and listen for an audible click
  6. Test the control wire from the PCM to the solenoid for continuity and short to ground
  7. Replace the vent solenoid if electrical tests pass but the valve does not actuate or seal

Vent Solenoid Checks Before Parts Replacement

  • A stuck-open vent solenoid can set P1495 and also cause a fuel smell that owners mistakenly attribute to a leaking fuel tank or filler neck.
  • Mitsubishi PCMs often set P1495 when the vent solenoid circuit is electrically intact but the valve mechanically sticks, so resistance tests alone can miss a failed valve.
  • Spider webs, mud daubers, and road debris commonly clog the vent solenoid filter and cause it to stick, which is a frequent cause of this code on older Mitsubishi models.
  • The EVAP vent solenoid shares its ground path with other emissions components on some models, so a corroded ground can set P1495 along with unrelated EVAP codes.
  • Replacing the vent solenoid without checking the connector pin tension often leads to a repeat failure because a loose terminal mimics a failed coil.

Can I keep driving with P1495?

The vehicle is safe to drive with P1495 because the fault affects only the evaporative emissions system and does not alter engine performance or safety. Avoid topping off the fuel tank past the first click and park outside or in a well-ventilated area if you notice a fuel smell until the vent solenoid is repaired.

Tools that help

Tools we recommend are in the Auto Veteran shop on Amazon. As an Amazon Associate we earn from qualifying purchases.

Guidance is general and written for Mitsubishi vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

Running on fumes Free guides aren't free to make. Top up the tank. Any amount, one time. Fuel the Garage