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P0442 Infiniti

P0442 Infiniti - EVAP Control System Leak Detected Small Leak

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P0442 Infiniti Comments |  Add Comment
Possible causes
- Missing or loose fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- EVAP canister or fuel tank leaks
- EVAP system hose leaking
- Fuel tank leaking
Help with Possible causes What does this mean?
Tech notes
The fuel tank filler cap and the Purge Volume Control Valve are the more common problems that will trigger the P0442 code on Infiniti vehicles.

There is an Infiniti Service Bulletin to help diagnose the P0442 code:
Infiniti OBDII Code P0442
Help with Tech Notes What does this mean?
When is the code detected?
Malfunction is detected when EVAP control system has a leak, EVAP control system does not operate properly.
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Possible a noticeable fuel odor caused by the release of fuel vapors
P0442 Infiniti Description

The Engine Control Module (ECM) tests the Evaporative Emission (EVAP) system for the following conditions:

- Large and small leaks

- Excess vacuum

- Purge flow during non-commanded conditions

- Fuel Level and Fuel Pressure sensor faults

- EVAP Purge and Vent Valve faults

The ECM monitors the Fuel Tank Pressure sensor in order to determine the level of vacuum/pressure in the EVAP system. The ECM commands both the EVAP Purge Solenoid and the EVAP Vent Valve ON when the conditions are met in order to apply an engine vacuum to the EVAP system. The ECM commands the EVAP Purge Solenoid OFF once the system has reached a predetermined level of vacuum. This test verifies if a vacuum can be achieved in the EVAP system. Failure to develop a vacuum may be caused by a large leak or a restriction.

OBDII Code P0442 Infiniti - EVAP Control System Leak Detected Small Leak
INFINITI Technical Service Bulletins for P0442 code
2003 INFINITI FX35 Electrical System Details
2003 INFINITI FX45 Electrical System Details
2003 INFINITI G35 Electrical System Details
2003 INFINITI FX45 Electrical System Details
2003 INFINITI G35 Electrical System Details
2003 INFINITI FX45 Engine And Engine Cooling:engine Details
2003 INFINITI G35 Engine And Engine Cooling:engine Details
2003 INFINITI FX45 061000 Engine And Engine Cooling:engine Details
2003 INFINITI G35 061000 Engine And Engine Cooling:engine Details
2003 INFINITI FX45 061000 Engine And Engine Cooling:engine Details
More Bulletins Help with Technical Service Bulletins What does this mean?
P0442 Infiniti Information for specific Infiniti models
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