Infiniti QX30 2014–2018 — technical service bulletin
Bulletin ITB17-042 · NHTSA communication 10119217 · issued Jul 21, 2017
Technical service bulletin
communication type
Service Brakes, Air
component
2014–2018
model years
10
vehicle entries
Official summary
INFINITI; DTC P0456 CAUSED BY EVAP LEAK AT VENT CONTROL VALVE O-RING IF YOU CONFIRM The MIL is ON in an APPLIED VEHICLE with DTC P0456 (EVAP VERY SML LEAK) AND - DTC P0456 is not caused by a loose fuel fill cap (refer to ITB13-044). - An EVAP leak has been detected where the vent control valve mounts to the canister. - The vent control valve O-ring seal is determined to be the cause. ACTION 1. DO NOT REPLACE the vent control valve. 2. Replace the vent control valve O-ring seal (O-ring). - Refer to SERVICE PROCEDURE on page 2.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.