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.

P0137 on Lincoln Corsair

O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)

Factory diagnostic protocol and troubleshooting wire for fault code P0137 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
Drivable (Short Trip)
Low urgency level
Est. Repair Cost
$100 - $300 (DIY: $35 - $100)
Parts & Labor DIY
Check P0137 On Another Lincoln Model:
Diagnose P0137 on Specific Corsair Model Year:

1. Symptoms of P0137 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 P0137, drivers commonly observe:

Check Engine Light on on Lincoln Corsair (2.0L EcoBoost (250HP) / 2.3L EcoBoost (295HP) / PHEV Grand Touring (266HP))
Downstream sensor voltage consistently below 0.15V on scan tool on Lincoln Corsair (2.0L EcoBoost (250HP) / 2.3L EcoBoost (295HP) / PHEV Grand Touring (266HP))
Failed emissions test 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%
Exhaust leak upstream of or directly at the Sensor 2 bung letting in fresh air (Lincoln OEM Part)
25%
Faulty downstream oxygen sensor (Lincoln OEM Part)
12%
Short to ground in sensor signal wire (Lincoln OEM Part)
8%
Extremely lean exhaust condition (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
Inspect Exhaust System for Leaks

Listen for exhaust ticking or black soot around flex pipe, flanges, and sensor bungs before the catalytic converter. on the Lincoln Corsair equipped with 2.0L EcoBoost (250HP) / 2.3L EcoBoost (295HP) / PHEV Grand Touring (266HP).

Required Tool: Flashlight, Jack Stands
02
Check Sensor Signal Voltage with Scan Tool

Monitor B1S2 voltage. Snap the throttle to enrich mixture; voltage should briefly spike above 0.8V. If it remains 0.0V–0.1V, sensor is defective or 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
Replace Downstream O2 Sensor

Unplug harness, remove old sensor with 7/8 socket, install replacement sensor and plug firmly. on the Lincoln Corsair equipped with 2.0L EcoBoost (250HP) / 2.3L EcoBoost (295HP) / PHEV Grand Touring (266HP).

Required Tool: O2 Sensor Socket, Ratchet
04
Clear Codes

Clear DTCs and verify B1S2 holds steady between 0.45V and 0.75V during steady highway cruising. on the Lincoln Corsair equipped with 2.0L EcoBoost (250HP) / 2.3L EcoBoost (295HP) / PHEV Grand Touring (266HP).

Required Tool: OBD-II Scanner
Recommended Parts & Testing Tools

Equipment for Diagnosing Lincoln Corsair (P0137)

Prime Fast Delivery & Verified Fitment
Direct-Fit Replacement Part

Lincoln Corsair OEM Replacement Sensor

4.7 / 5.0 (Verified Fit)

Direct-fit replacement assembly engineered to OEM tolerances for Lincoln Corsair.

$45 – $95 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 P0137 FAQs

What causes code P0137 to trigger on a Lincoln Corsair?

On the Lincoln Corsair (2.0L EcoBoost (250HP) / 2.3L EcoBoost (295HP) / PHEV Grand Touring (266HP)), P0137 is most frequently caused by Exhaust leak upstream of or directly at the Sensor 2 bung letting in fresh air or Faulty downstream oxygen sensor.

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 P0137?

Yes. Vehicle is fully drivable, but Check Engine Light will remain illuminated. Given that P0137 carries a Low severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.