WenmarOpen by Wenmar Pro

P0304 on the 2014 Ford Fusion

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.

Nobody has written a description of this code yet.

Bulletins for this model year that name P0304
TSB 22-23222022-08-23. Service bulletin. Some 2014-2019 Fusion vehicles built on or before 10-Jun-2019 and 2017-2019 Escape vehicles built on or before 08-Apr-2019 equipped with a 1.5L EcoBoost engine may exhibit low coolant level, white exhaust smoke and/or runs rough condition with or without an illuminated malfunction indicator light (MIL) with only diagnostic trouble codes (DTCs) P0300, P0301-P0304, P0316, P0217, P1285 and/or P1299 stored in powertrain control module (PCM). This may be due to coolant intrusion into the cylinder. To resolve the condition, follow the Service Procedure to replace the short block and head gasket.
TSB 22-21342022-04-20. Service bulletin. Some 2014-2019 Fusion vehicles built on or before 10-Jun-2019 and 2017-2019 Escape vehicles built on or before 08-Apr-2019 equipped with a 1.5L EcoBoost engine may exhibit low coolant level, white exhaust smoke and/or runs rough condition with or without an illuminated malfunction indicator light (MIL) with only diagnostic trouble codes (DTCs) P0300, P0301-P0304, P0316, P0217, P1285 and/or P1299 stored in powertrain control module (PCM). This may be due to coolant intrusion into the cylinder. To resolve the condition, follow the Service Procedure to replace the short block and head gasket.
TSB 21-22692021-09-30. Service bulletin. Some 2014-2019 Fusion vehicles built on or before 10-Jun-2019 and 2017-2019 Escape vehicles built on or before 08-Apr-2019 equipped with a 1.5L EcoBoost engine may exhibit low coolant level, white exhaust smoke and/or runs rough condition with or without an illuminated malfunction indicator light (MIL) with only diagnostic trouble codes (DTCs) P0300, P0301-P0304, P0316, P0217, P1285 and/or P1299 stored in powertrain control module (PCM). This may be due to coolant intrusion into the cylinder. To resolve the condition, follow the Service Procedure to replace the short block and head gasket.
TSB 20-21002020-05-05. Service bulletin. Some 2014-2019 Fusion vehicles built on or before 10-Jun-2019 and 2017-2019 Escape vehicles built on or before 08-Apr-2019 equipped with a 1.5L EcoBoost engine may exhibit low coolant level, white exhaust smoke and/or runs rough condition with or without an illuminated malfunction indicator light (MIL) with only diagnostic trouble codes (DTCs) P0300, P0301-P0304, P0316, P0217, P1285 and/or P1299 stored in powertrain control module (PCM). This may be due to coolant intrusion into the cylinder. To resolve the condition, follow the Service Procedure to replace the short block and head gasket.
TSB 19-23752020-01-07. Service bulletin. This article supersedes TSB 19-2139 to update the production fix date. Some 2014-2019 Fusion vehicles built on or before 10-Jun-2019 and 2017-2019 Escape vehicles built on or before 08-Apr-2019 equipped with a 1.5L EcoBoost engine may exhibit low coolant level, white exhaust smoke and/or runs rough condition with or without an illuminated malfunction indicator light (MIL) with only diagnostic trouble codes (DTCs) P0300, P0301-P0304, P0316, P0217, P1285 and/or P1299 stored in powertrain control module (PCM). This may be due to coolant intrusion into the cylinder. To resolve the condition, replace the short block and head gasket.
TSB 19-21392019-12-04. Service bulletin. Some 2014-2019 Fusion vehicles built on or before 21-Feb-2019 and 2017-2019 Escape vehicles built on or before 06-Apr-2019 equipped with a 1.5L EcoBoost engine may exhibit low coolant level, white exhaust smoke and/or runs rough condition with or without an illuminated malfunction indicator light (MIL) with only diagnostic trouble codes (DTCs) P0300, P0301-P0304, P0316, P0217, P1285 and/or P1299 stored in powertrain control module (PCM). This may be due to coolant intrusion into the cylinder. To resolve the condition, replace the short block and head gasket.
TSB 16-01302017-08-01. Service bulletin. Some 2014-2017 Fusion and 2017 Escape vehicles equipped with a 1.5L Gasoline Turbocharged Direct Injection (GTDI) engine may exhibit low coolant, white exhaust smoke and an illuminated MIL if diagnostic trouble codes (DTCs) P0217, P300, P0301, P0302, P0303, P0304, P0316 and/or P1299 are present. This condition may be due to an intake manifold bolt backing out causing damage to the charge air cooler (CAC). Follow the Service Procedure steps to correct the condition.
TSB 17-00282017-05-15. Service bulletin. SOME 2014-2017 FUSION AND 2017 ESCAPE VEHICLES EQUIPPED WITH A 1.5L GASOLINE TURBOCHARGED DIRECT INJECTION (GTDI) ENGINE AND AN ODOMETER READING 16,000 KM (10,000 MILES) OR ABOVE MAY EXHIBIT LOW COOLANT, WHITE EXHAUST SMOKE AND MAY ALSO EXHIBIT AN ILLUMINATED MIL WITH DIAGNOSTIC TROUBLE CODES (DTCS) P0217, P0300, P0301, P0302, P0303, P0304, P0316 AND/OR P1299. THIS CONDITION MAY BE DUE TO AN INTAKE MANIFOLD BOLT BACKING OUT CAUSING DAMAGE TO THE CHARGE AIR COOLER (CAC). FOLLOW THE SERVICE PROCEDURE STEPS TO CORRECT THE CONDITION
TSB 16-01502017-03-20. Service bulletin. SOME 2014-2017 FUSION AND 2017 ESCAPE VEHICLES EQUIPPED WITH A 1.5L GASOLINE TURBOCHARGED DIRECT INJECTION (GTDI) ENGINE MAY EXHIBIT LOW COOLANT, WHITE EXHAUST SMOKE AND AN ILLUMINATED MIL IF DIAGNOSTIC TROUBLE CODES (DTCS) P0217, P300, P0301, P0302, P0303, P0304, P0316 AND/OR P1299 ARE PRESENT. THIS CONDITION MAY BE DUE TO AN INTAKE MANIFOLD BOLT BACKING OUT CAUSING DAMAGE TO THE CHARGE AIR COOLER (CAC). FOLLOW THE SERVICE PROCEDURE STEPS TO CORRECT THE CONDITION

9 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.