P21A1 · Manufacturer communications

RAM · 2025-07-11

Loose Charge Air Cooler Case Crimp Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P219C-00 - Cylinder 1 Air-fuel Ratio Imbalance. ● P219D-00 - Cylinder 2 Air-fuel Ratio Imbalance. ● P219F-00 - Cylinder 4 Air-fuel Ratio Imbalance. ● P21A0-00 - Cylinder 5 Air-fuel Ratio Imbalance. ● P21A1-00 - Cylinder 6 Air-fuel Ratio Imbalance. Customers may experience one or more of the following: ● Audible whistle type noise heard from the engine area. ● Reduced boost to performance This bulletin involves inspecting for a crimp in the Charge Air Cooler case and possibly replacing the Charge Air Cooler.

KIA · 2025-05-23

TECHNICAL SERVICE BULLETIN: CYLINDER IMBALANCE DTC P219XXOO INSPECTION AND INJECTOR REPLACEMENT - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information regarding cylinder air-fuel ratio imbalance DTC P219XX00 stored in ECU on some 2022MY Carnival (KA4) vehicles with Lambda III 3.5L GDI engine, produced from January 26, 2021through November 10, 2021, which may exhibit reduced power when accelerating from a stop or while driving and MIL ON with one or more of the following DTC(s): P219C00, P219D00, P219E00, P219F00, P21A000, P21A100. If one or more of the listed DTCs are present for any cylinder, then one or more high-pressure injectors (1) and clip (2) may…

KIA · 2022-08-29

TECHNICAL SERVICE BULLETIN: CYLINDER IMBALANCE DTC P219XXOO INSPECTION AND INJECTOR REPLACEMENT - This bulletin provides information regarding cylinder air-fuel ratio imbalance DTC P219XX00 stored in ECU on some 2022MY Carnival (KA4) vehicles with Lambda III 3.5L GDI engine, produced from January 26, 2021 through November 10, 2021, which may exhibit reduced power when accelerating from a stop or while driving and MIL ON with one or more of the following DTC(s): - P219C00 - Cylinder #1 Air-Fuel Ratio Imbalance - P219D00 - Cylinder #2 Air-Fuel Ratio Imbalance - P219E00 - Cylinder #3 Air-Fuel Ratio Imbalance - P219F00 - Cylinder #4 Air-Fuel Ratio Imbalance - P21A000 - Cylinder #5 Air-Fuel Ratio Imbalance - P21A100 - Cylinder #6 Air-Fuel Ratio Imbalance If one or more of the listed DTCs are…

AUDI · 2016-01-11

MIL is on due to One of the following DTCs for air-fuel ratio imbalance is stored in the engine control module (ECM), J623 (address word 01): DTC P219C00 (stored in cylinder 1), DTC P219D00 (stored in cylinder 2), DTC P219E00 (stored in cylinder 3), DTC P219F00 (stored in cylinder 4), DTC P21A000 (stored in cylinder 5), DTC P21A100 (stored in cylinder 6). An incorrect software setting causes the DTC to be stored. TSB 2011732 00 Software Version Management (SVM), operating instructions will be necessary to complete this procedure.

TOYOTA · 2015-08-11

TSB: Some 2015 model year Tacoma vehicles equipped with a 1GR-FE engine may exhibit a MIL ?ON? condition with Diagnostic Trouble Codes (DTCs) P219A, P219B, P219C, P219D, P219E, P219F, P21A0, and/or P21A1 present. Follow the Repair Procedure in this bulletin to address this condition.