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DTC codes / Chrysler codes / P1409

P1409 · ChryslerEGR Vacuum System Leak

P1409 on Chrysler vehicles indicates that the engine computer has detected a leak in the vacuum portion of the exhaust gas recirculation (EGR) system, meaning the EGR valve is not receiving the vacuum signal it expects. The computer typically monitors the EGR vacuum transducer or solenoid circuit and compares commanded vacuum to actual vacuum via a sensor, flagging the code when the two do not match.

SystemPowertrain
Code typeChrysler specific
SeverityMedium
Fix difficultyIntermediate
AreaAuxiliary emission controls

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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