Ford 2.7L - Illuminated MIL/Engine Coolant Over Temperature Warning w/Various DTCs

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Technical resources to help diagnose and repair engine-related service issues.
Tech Tips

Ford- Illuminated MIL/Engine Coolant Over Temperature Warning

This may be caused by the engine coolant temperature (ECT) sensor or knock sensor wiring harness.

Underhood Service Staff Writers
By Underhood Service Staff Writers
Published:
  • MODELS
  • 2015-2020 F150 2.7L EcoBoost
  • 2015-2020 Edge 2.7L EcoBoost
  • 2015-2020 Fusion 2.7L EcoBoost
  • 2016-2018 MKX 2.7L EcoBoost
  • 2019-2020 Nautilus 2.7L EcoBoost

Customers may experience an illuminated malfunction indicator lamp (MIL) and/or an 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 caused by the engine coolant temperature (ECT) sensor or knock sensor wiring harness. Replace the 12A648 ECT sensor and 12A699 knock sensor. Do not disconnect the ECT sensor from the knock sensor harness in case parts are called back for analysis.

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