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Home >> Mitsubishi >> 1997 >> Eclipse Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 2.4L >> Circuit Tests >> DTC P0442 - Evaporative (EVAP) Control System Leak Detected
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DTC P0442 - Evaporative (EVAP) Control System Leak Detected

NOTE: For terminal identification, see TERMINAL IDENTIFICATION in SELF-DIAGNOSTICS section. For circuit and wire color identification, see WIRING DIAGRAMS - 2.4L article.
  1. Ensure fuel tank cap is tight. Check fuel vent valve. Repair or replace as necessary. If fuel vent valve is okay, go to next step.
  2. Using scan tool in MUT-II mode, read SERVICE DATA No. 08 (evaporative emission purge solenoid). Turn ignition on. If solenoid turns on, go to next step. If solenoid does not turn on, check for EVAP control system purge control valve malfunction. See DTC P0443 - EVAPORATIVE (EVAP) CONTROL SYSTEM PURGE CONTROL VALVE CIRCUIT MALFUNCTION  .
  3. Using scan tool in MUT-II mode, read SERVICE DATA No. 29 (evaporative ventilation solenoid). Turn ignition on. If solenoid turns on, go to next step. If solenoid does not turn on, check for EVAP control system vent control valve malfunction. See DTC P0446 - EVAPORATIVE (EVAP) CONTROL SYSTEM VENT CONTROL MALFUNCTION  .
  4. Using scan tool in MUT-II mode, read SERVICE DATA No. 73 (fuel tank differential pressure sensor). Remove gas cap. Turn ignition on. If scan tool displays -3.3-3.3 kPa, go to next step. If scan tool does not display -3.3-3.3 kPa, check for EVAP control system pressure sensor malfunction. See DTC P0450 - EVAPORATIVE (EVAP) EMISSION CONTROL SYSTEM PRESSURE SENSOR MALFUNCTION  .
  5. Using scan tool in MUT II mode, read SERVICE DATA No. 13 (intake air temperature). If temperature displayed on scan tool is equal to actual air temperature, go to next step. If temperature displayed on scan tool is not equal to actual air temperature, check air temperature circuit. See DTC P0110 - INTAKE AIR TEMPERATURE (IAT) CIRCUIT MALFUNCTION  .
  6. Using scan tool in MUT II mode, read SERVICE DATA No. 27 (power steering pressure switch). Turn engine on and allow it to idle. If scan tool displays OFF with steering wheel stationary and ON with steering wheel turning, go to next step. If scan tool does not display as described, check power steering pressure sensor circuit. see DTC P0551 - POWER STEERING PRESSURE (PSP) SENSOR CIRCUIT RANGE/PERFORMANCE  .
  7. Check for contaminated fuel. Check if any fuel tank, purge line or vapor line seals have failed.
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