P1299 on Ford

17126Status unverified

MIL with P1285 and/or P1299 (cylinder head over temperature), gauge reading hot or A/C inoperative

2003focus · issued November 17, 2003 · NHTSA 10004047

Ford bulletin for the 2003 Focus naming P1299 as cylinder head over temperature; the NHTSA summary does not give the repair.

We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

20-2100Status unverified

1.5L EcoBoost coolant intrusion with P0300-P0304, P0316, P0217, P1285, P1299

2014–2019escape, fusion · 1.5L EcoBoost · issued May 5, 2020 · NHTSA 10174400

Coolant enters a cylinder; replace the short block and head gasket. Supersedes 19-2139.

We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

19-2172Status unverified

2.0L EcoBoost coolant intrusion with P0300-P0304, P0316, P0217, P1285, P1299

2015–2019edge, fusion, escape · 2.0L EcoBoost · issued July 3, 2019 · NHTSA 10162062

Coolant enters a cylinder; replace the long block. Also covers Lincoln MKZ and MKC.

We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

SSM 54114Status unverified

Engine Coolant Over-Temperature warning with P1285/P1299 under hard acceleration

2023–2025escape · 1.5L EcoBoost · issued August 7, 2025 · NHTSA 11021705

Machining chips in the cylinder head can block a coolant passage near the CHT2 port on 1.5L engines built on or before 16-Sep-2024; the message gives a diagnostic road test and flush.

We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

26-2217Status unverified

P1299, P1285 and/or P2C39 with Engine Over-Temperature message

2024–2025f-150 · issued May 14, 2026 · NHTSA 11032695

PCM software and/or the CHT sensor; diagnose and replace the CHT sensor with an updated version. Supersedes 24-2441.

We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

SSM 48991Status unverified

MIL and/or Engine Coolant Over Temperature warning from the ECT or knock sensor harness

2015–2020f-150, edge, fusion · 2.7L EcoBoost · issued August 4, 2020 · NHTSA 10177705

On 2.7L EcoBoost engines, replace the ECT sensor and knock sensor harness. Also covers Lincoln MKX, Nautilus and Continental.

We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

21-2168Status unverified

MIL and/or Engine Coolant Over Temperature warning from an intermittent ECT voltage drop

2018–2020f-150 · 2.7L EcoBoost · issued July 1, 2021 · NHTSA 10198582

Fit the heater hose with relocated ECT sensor and a jumper harness.

We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

SSM 52786Status unverified

False overheat with P1299 and/or P0217 from generator interference

2019–2020transit-connect · issued August 16, 2024 · NHTSA 11006475

If the concern stops with the generator disconnected, replace the generator.

We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.