CUSTOMER CONCERN The check-engine light is on and DTC P2418 resets as soon as the engine starts. CAUSE The confirmed repair identified an internally failed fuel vapor valve in the vapor-tube assembly. CORRECTION Remove and replace the fuel vapor valve and vapor-tube assembly, clear P2418, and verify the EVAP valve circuit operates normally.

CUSTOMER CONCERN The check-engine light is on and DTC P0442 is stored. CAUSE Smoke testing confirmed an EVAP leak at the capless fuel-filler-neck flap. CORRECTION Remove and replace the fuel filler neck, clear P0442, and verify the EVAP system seals correctly.

CUSTOMER CONCERN The engine overheats after collision-related radiator replacement and stores DTC P1285. CAUSE The confirmed repair identified a failed engine water pump; multiple exact-vehicle fixes replaced the pump for this overheating condition. CORRECTION Remove and replace the engine water pump, refill and bleed the cooling system, clear P1285, and verify normal engine temperature.

CUSTOMER CONCERN The engine runs very poorly after air-filter service, pings under load, remains in open loop, and stores lean and misfire DTCs. CAUSE Inspection confirmed debris contamination on the mass-airflow sensor element, causing incorrect airflow measurement and the lean misfire. CORRECTION Clean the mass-airflow sensor element and air-filter housing, clear the DTCs, and verify closed-loop operation and normal engine performance.