P1026 on Ford vehicles

A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.

Bulletins and campaigns Ford filed with NHTSA whose summary names P1026. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

• SSM 46906 Service bulletin
  2017-11-08 · Engine And Engine Cooling
• Some 2015-2018 F150/Edge, 2016-2018 MKX and 2017-2018 Fusion, Continental vehicles equipped with a 2.7L engine may experience a malfunction indicator lamp (MIL) and/or wrench lamp with Diagnostic Trouble Codes (DTCs): P0116, P0117, P0118, P0119, P0217, P0330, P1026, and/or P130D. This may be due to a engine coolant temperature (ECT) sensor connector which is not fully seated or damaged wiring betw
• SSM 47791 Service bulletin
  2019-02-06 · Engine And Engine Cooling
• Some 2015-2019 F150/Edge, 2016-2018 MKX, 2019 Nautilus and 2017-2019 Fusion/Continental vehicles equipped with a 2.7L engine may exhibit a malfunction indicator lamp (MIL) and/or wrench lamp with diagnostic trouble codes (DTCs) P0116, P0117, P0118, P0119, P0217, P0330, P1026, and/or P130D. This may be due to a engine coolant temperature (ECT) sensor connector which is not fully seated or damaged w
• SSM 47791 Service bulletin
  2019-02-06 · Engine And Engine Cooling — Cooling System
• Some 2015-2019 F150/Edge, 2016-2018 MKX, 2019 Nautilus and 2017-2019 Fusion/Continental vehicles equipped with a 2.7L engine may exhibit a malfunction indicator lamp (MIL) and/or wrench lamp with diagnostic trouble codes (DTCs) P0116, P0117, P0118, P0119, P0217, P0330, P1026, and/or P130D. This may be due to a engine coolant temperature (ECT) sensor connector which is not fully seated or damaged w
• SSM 48345 Service bulletin
  2019-11-22 · Engine And Engine Cooling
• Some 2019-2020 Edge/Escape/Nautilus/Corsair vehicles equipped with 2.0L EcoBoost engines may exhibit low coolant, white smoke from the tailpipe, an over temperature warning in the instrument panel cluster (IPC), external coolant leaking, and/or illuminated MIL with DTCs P0217, P0401, P1026, P1285, P1299, P2196 or P2467 stored in the PCM. This may be due to an EGR Cooler that is leaking coolant int
• SSM 51333 Service bulletin
  2023-02-01 · Engine And Engine Cooling
• Some 2022-2023 Explorer vehicles equipped with a 2.3L engine may exhibit an intermittent check engine light on with diagnostic trouble code (DTC) P1026 and/or P1299 present in the powertrain control module (PCM) and an engine over-temperature message displayed on the instrument panel cluster (IPC) after a cold start in cold (at or below freezing) ambient temperatures. The vehicle may also enter fa
• SSM 51625 Service bulletin
  2023-05-11 · Engine And Engine Cooling
• Some 2022-2023 Explorer vehicles equipped with a 2.3L engine may exhibit an intermittent malfunction indicator light (MIL) with diagnostic trouble code (DTC) P1026 and/or P1299 present in the powertrain control module (PCM) and an engine over-temperature message displayed on the instrument panel cluster (IPC) after a cold engine start. The vehicle will also exhibit reduced performance when it ente
• SSM 51756 Service bulletin
  2023-06-30 · Engine And Engine Cooling
• Some 2022-2023 Explorer vehicles equipped with a 2.3L engine may exhibit an intermittent malfunction indicator light (MIL) with diagnostic trouble code (DTC) P1026 and/or P1299 present in the powertrain control module (PCM) and an engine over-temperature message displayed on the instrument panel cluster (IPC) after a cold engine start. The vehicle will also exhibit reduced performance when it ente
• SSM 48991 Service bulletin
  2020-07-10 · Engine And Engine Cooling
• Some 2015-2020 F150/Edge/Fusion, 2016-2018 MKX, 2019-2020 Nautilus, and 2017-2020 Continental vehicles equipped with 2.7L EcoBoost engines may exhibit an illuminated malfunction indicator lamp (MIL) and/or Engine Coolant Over Temperature warning with diagnostic trouble codes (DTCs) P0116, P0117, P0118, P0119, P0128, P0217, P0330, P1026, P1299, and/or P130D. This may be due to the engine coolant te
• TSB 20-2234 Service bulletin
  2020-07-10 · Engine And Engine Cooling
• Some 2019-2020 Edge/Nautilus vehicles equipped with a 2.0L EcoBoost engine may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P0128, P0217, P044C, P1026, P1285, P1299, P139A and/or P2457 stored in the powertrain control module (PCM). The vehicle may also exhibit low coolant level, white smoke from the tailpipe, an over temperature warning in the instru
• TSB 25-2206 Service bulletin
  2025-05-16 · Electrical System
• Some of the vehicles listed in the Model statement above may exhibit an incorrectly illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P1299, P1026, and P2C39.

A stored code names the test that failed, never the part that caused it. The record above is what Ford and its owners have filed about it; the code’s page across every make has the whole file.