Service Repair

Fuel-Ratio Imbalance for Mustang

Nov. 22, 2021

This bulletin is a concern for some 2012-2014 Ford Mustang vehicles equipped with a 5.0L engine and automatic transmission.

Information courtesy of Mitchell 1

Mike Mavrigian

Some 2012-2014 Ford Mustang vehicles equipped with a 5.0L engine and automatic transmission may exhibit a Malfunction-Indicator-Lamp (MIL) on with Diagnostic Trouble Code (DTC) P219A (fuel-ratio imbalance for bank with No. 1 cylinder) and/or P219B (fuel-ratio imbalance for bank that does not include No. 1 cylinder stored in the PCM memory).

If one or both DTCs are present, reprogram the PCM to the latest calibration using IDS release 90.05 or higher.

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.