DTC codes / Chrysler codes / P1486
P1486 on Chrysler vehicles means the engine computer detected a pinched or restricted evaporative emission (EVAP) system hose during its natural vacuum leak monitor test. The computer uses the fuel tank pressure sensor and a vacuum pump to check for leaks, and a pinched hose prevents the expected pressure change from occurring.
Guidance is general and written for Chrysler vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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