Dodge Ram Air Suspension

    April 9, 2021

    A “small number” of 2014-2015 RAM 2500 and 3500 trucks equipped with an air suspension may experience a sensor issue.

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    65b83af20e36b1001e8171ff Ram

    A “small number” of 2014-2015 RAM 2500 and 3500 trucks equipped with an air suspension may experience a MIL on with DTC C1556-14 (ride height air pressure sensor – circuit short to ground or open). In addition, the customer may experience a non-operative auto level rear air suspension. Using a scan tool, check for DTCs. Address all non-related codes before proceeding.

    If code C1556-14 is present, inspect the wiring harness for shorts and grounds and repair as needed. Replace the air compressor and refill the system with nitrogen. Replacement compressors are available as P/N 68239571AA. Tool P/N 10247B is required to refill the system.

    About the Author

    Information courtesy of Mitchell 1

    Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.

    About the Author

    Mike Mavrigian | Motor Age Editor

    Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of  specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.

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