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
– 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
Tech description
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
When is the obd code mean?
Malfunction is detected when EVAP control system has a leak, EVAP control system does not operate properly.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Possible a noticeable fuel odor caused by the release of fuel vapors
– Possible a noticeable fuel odor caused by the release of fuel vapors
P0442 INFINITI OBD Code Description