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P1408 on the 2000 Mercury Sable

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.

Bulletins for this model year that name P1408
78572000-06-07. Service bulletin. SOME VEHICLES EQUIPPED WITH A 3.0L 2-VALVE ENGINE MAY EXHIBIT A MALFUNCTION INDICATOR LAMP ON WITH A DIAGNOSTIC TROUBLE CODE P0401 AND / OR P1408 STORED IN MEMORY. THIS MAY BE CAUSED BY INSUFFICIENT EXHAUST GAS RECIRCULATION FLOW. *TT
78572000-06-07. Service bulletin. VEHICLES MAY EXHIBIT A MALFUNCTION INDICATOR LAMP (MIL) ON WITH A DIAGNOSTIC TROUBLE CODE (DTC) P0401 AND/OR P1408 STORED IN MEMORY. THIS MAY BE CAUSED BY A LOSS OF VACUUM TO THE EXHAUST GAS RECIRCULATION SYSTEM BECAUSE THE RUBBER VACUUM ELBOW (LOCATED ON THE BACK SIDE OF THE INTAKE MANIFOLD) HAS BEEN SEATED AGAINST THE VACUUM PORT.

2 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.