MazicBay Diagnostics
MAZICBAYDiagnostics
FTC Reader Disclosure: When you purchase or register through links on our site, we may earn an affiliate commission at no extra cost to you. Read our Editorial & Advertising Policy.

P0117 on Lincoln Corsair

Engine Coolant Temperature Sensor 1 Circuit Low

Factory diagnostic protocol and troubleshooting wire for fault code P0117 specifically for the Lincoln Corsair (2020–2026, 2.0L EcoBoost (250HP) / 2.3L EcoBoost (295HP) / PHEV Grand Touring (266HP)).

Verified OEM Telemetry & Field Repair Tree
Lincoln Corsair2020–2026
Lincoln Corsair
SUV2.0L EcoBoost (250HP) / 2.3L EcoBoost (295HP) / PHEV Grand Touring (266HP)
Reliability
Sensor Voltage Ref
0.1V – 5.0V Ref
Corsair SAE Mode $01
ECU Network Bus
500 kbps CAN-FD
ISO 15765-4 Compliant
Drivability Status
Not Recommended
High urgency level
Est. Repair Cost
$80 - $250 (DIY: $20 - $60)
Parts & Labor DIY
Check P0117 On Another Lincoln Model:
Diagnose P0117 on Specific Corsair Model Year:

1. Symptoms of P0117 on Lincoln Corsair

When the Engine Control Module (ECM/PCM) on your Lincoln Corsair (2.0L EcoBoost (250HP) / 2.3L EcoBoost (295HP) / PHEV Grand Touring (266HP)) logs fault code P0117, drivers commonly observe:

Check Engine Light on on Lincoln Corsair (2.0L EcoBoost (250HP) / 2.3L EcoBoost (295HP) / PHEV Grand Touring (266HP))
Radiator radiator fans running constantly at high speed on Lincoln Corsair (2.0L EcoBoost (250HP) / 2.3L EcoBoost (295HP) / PHEV Grand Touring (266HP))
Temperature gauge pegged at maximum H or not reading on Lincoln Corsair (2.0L EcoBoost (250HP) / 2.3L EcoBoost (295HP) / PHEV Grand Touring (266HP))
Engine hard starting when cold (flooding from excess fuel) on Lincoln Corsair (2.0L EcoBoost (250HP) / 2.3L EcoBoost (295HP) / PHEV Grand Touring (266HP))
Poor gas mileage and rough idling on Lincoln Corsair (2.0L EcoBoost (250HP) / 2.3L EcoBoost (295HP) / PHEV Grand Touring (266HP))
Lincoln Corsair OBD-II Port Location
The 16-pin diagnostic connector is located Driver lower dash trim panel near footwell. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Lincoln Corsair

Historical warranty claims and technical repair bulletins for Lincoln Corsair point to the following failure distribution:

55%
ECT sensor internal short to ground (Lincoln OEM Part)
25%
Short circuit to ground in ECT signal wiring harness (Lincoln OEM Part)
12%
Damaged, corroded, or water-contaminated ECT connector (Lincoln OEM Part)
8%
Faulty PCM / ECM analog input circuit (Lincoln OEM Part)
* Source: Synthesized from NHTSA ODI field repair telemetry and verified OEM Technical Service Bulletin (TSB) repair tree frequency percentiles for Lincoln Corsair.

3. Step-by-Step DIY Repair Guide for Lincoln Corsair

01
Scan ECT Temperature Data

Read ECT live PID on scanner. If it reads 284°F (140°C) or higher with engine cold, a short to ground exists. on the Lincoln Corsair equipped with 2.0L EcoBoost (250HP) / 2.3L EcoBoost (295HP) / PHEV Grand Touring (266HP).

Required Tool: OBD-II Scanner
02
Unplug ECT Sensor Connector

Unplug sensor connector while watching live data. If temperature drops to -40°F (-40°C), the sensor itself is shorted. on the Lincoln Corsair equipped with 2.0L EcoBoost (250HP) / 2.3L EcoBoost (295HP) / PHEV Grand Touring (266HP).

Required Tool: OBD-II Scanner
03
Inspect Wiring Harness

If reading stays pegged at max with sensor unplugged, inspect harness for pinch points grounding against engine block. on the Lincoln Corsair equipped with 2.0L EcoBoost (250HP) / 2.3L EcoBoost (295HP) / PHEV Grand Touring (266HP).

Required Tool: Digital Multimeter
04
Replace Engine Coolant Temperature Sensor

Allow engine to cool, unscrew old ECT sensor from coolant crossover pipe or thermostat housing, install new OEM sensor with fresh thread sealant. on the Lincoln Corsair equipped with 2.0L EcoBoost (250HP) / 2.3L EcoBoost (295HP) / PHEV Grand Touring (266HP).

Required Tool: 19mm Deep Socket, Ratchet, Coolant Catch Pan
05
Top off Coolant & Clear Codes

Bleed air from cooling system, clear DTCs, and verify normal temperature rise on live data. on the Lincoln Corsair equipped with 2.0L EcoBoost (250HP) / 2.3L EcoBoost (295HP) / PHEV Grand Touring (266HP).

Required Tool: Coolant Funnel Kit, OBD-II Scanner
Recommended Parts & Testing Tools

Equipment for Diagnosing Lincoln Corsair (P0117)

Prime Fast Delivery & Verified Fitment
Variable Valve Timing (VVT)

VVT Oil Control Solenoid Valve

4.6 / 5.0 (Direct Fit)

Restores accurate camshaft timing and oil pressure regulation on Lincoln Corsair.

$34 – $65 Prime
Check Fitment on Amazon
Sensor Signal Voltage Meter

AstroAI Auto-Ranging Digital Multimeter

4.6 / 5.0 (Best Seller)

Essential for testing 0.1V–5.0V sensor reference signals, ground continuity (<0.20Ω), and harness resistance.

$29.99 Prime
View on Amazon
Top Mobile OBD-II Scanner

BlueDriver Bluetooth Pro OBDII Scan Tool

4.7 / 5.0 (50,000+ Reviews)

Reads and clears enhanced codes (ABS, Airbag, Transmission, Engine) & live freeze-frame telemetry on phone.

Compare OEM & Aftermarket Replacement Sensors for Lincoln CorsairVerified direct-fit pricing from Denso, Bosch, Motorcraft, and ACDelco on Amazon.
Find Parts on Amazon
* As an Amazon Associate, MazicBay earns from qualifying purchases. Prices & availability subject to change.

Other Common Fault Codes on Lincoln Corsair

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Lincoln Corsair:

4. Lincoln Corsair P0117 FAQs

What causes code P0117 to trigger on a Lincoln Corsair?

On the Lincoln Corsair (2.0L EcoBoost (250HP) / 2.3L EcoBoost (295HP) / PHEV Grand Touring (266HP)), P0117 is most frequently caused by ECT sensor internal short to ground or Short circuit to ground in ECT signal wiring harness.

Where is the OBD-II port located on my Lincoln Corsair?

On the Lincoln Corsair, the 16-pin DLC diagnostic connector is located Driver lower dash trim panel near footwell. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.

Can I safely drive my Lincoln Corsair with code P0117?

No. The ECU thinks the engine is at 280°F+ (overheating) and runs rich or disables cooling fan logic. Given that P0117 carries a High severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.