Engine Coolant temperature sensor

See below On top right front of engine, in water outlet tube See the diagram below for location

Good afternoon,

Yes, it could cause it but it is a stretch.

The most common cause is a vacuum leak from a hose worn or disconnected or the PCV valve.

https://www.2carpros.com/articles/repair-lean-mixture-codes-p0171-or-p0174-on-some-manufacturers

Low fuel pressure will also cause this and is the most common cause for these codes.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Roy

Hello again.. could you please use the reply button at the bottom of this box .. not open another box .. it's pure luck i spotted your name in the list .. if you use the reply button it tells me you have replied !! thanks

COOLANT TEMPERATURE READS INACCURATELY (RANGER)
Perform TEMPERATURE GAUGE TEST under COMPONENT TESTS. If temperature gauge perform properly, replace temperature sensor and retest system. If temperature gauge does not perform properly, go to next step.
Turn ignition off. Disconnect temperature sensor harness connector. Remove instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION. Disconnect instrument cluster connector C215. See Fig. 3 . Measure resistance of Red/White wire between instrument cluster connector C215, terminal No. 3 and temperature sensor harness connector. Resistance should be less than 5 ohms. Measure resistance between ground and instrument cluster connector C215, terminal No. 3 (Red/White wire). Resistance should be more than 10 k/ohms. If resistance is as specified, go to next step. If resistance is not as specified, repair open or short in Red/White wire and retest system.
Disconnect instrument cluster connector C216. See Fig. 4 . Turn ignition on. Measure voltage between ground and instrument cluster connector C216, terminal No. 1 (Red/Yellow wire). If voltage is more than 10 volts, go to next step. If voltage is less than 10 volts, repair open in Red/Yellow wire between instrument cluster connector and fuse No. 11 in interior fuse panel and retest system.
Turn ignition off. Measure resistance between ground and instrument cluster connector C215, terminal No. 2 (Black/White wire). If resistance is less than 5 ohms, go to next step. If resistance is more than 5 ohms, repair open in Black/White wire between instrument cluster connector and ground and retest system.
Measure resistance between instrument cluster temperature gauge clips "B" and "S". Resistance should be 215-256 ohms. Measure resistance between instrument cluster temperature gauge clips "G" and "S". Resistance should be 90-110 ohms. If resistances are as specified, replace instrument cluster printed circuit and retest system. See PRINTED CIRCUIT (RANGER) under REMOVAL & INSTALLATION. If resistances are not as specified, replace temperature gauge and retest system. See GAUGES under REMOVAL & INSTALLATION.

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Firstly make sure your coolant is at the correct level and 50/50, (it is all relevant) then you should check for air pockets, then the radiator cap can play a role too

Its on the right friont of engine on coolant line pic I have sent ishows temp sender. Sensor is on right front coolant line