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P0137 on Lincoln Nautilus

O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)

Factory diagnostic protocol and troubleshooting wire for fault code P0137 specifically for the Lincoln Nautilus (2022–2026, 2.0L EcoBoost (250HP) / 2.7L Twin-Turbo V6 (335HP Black Label)).

Verified OEM Telemetry & Field Repair Tree
Lincoln Nautilus2022–2026
Lincoln Nautilus
SUV2.0L EcoBoost (250HP) / 2.7L Twin-Turbo V6 (335HP Black Label)
Reliability
Sensor Voltage Ref
0.1V – 5.0V Ref
Nautilus 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 Nautilus Model Year:

1. Symptoms of P0137 on Lincoln Nautilus

When the Engine Control Module (ECM/PCM) on your Lincoln Nautilus (2.0L EcoBoost (250HP) / 2.7L Twin-Turbo V6 (335HP Black Label)) logs fault code P0137, drivers commonly observe:

Check Engine Light on on Lincoln Nautilus (2.0L EcoBoost (250HP) / 2.7L Twin-Turbo V6 (335HP Black Label))
Downstream sensor voltage consistently below 0.15V on scan tool on Lincoln Nautilus (2.0L EcoBoost (250HP) / 2.7L Twin-Turbo V6 (335HP Black Label))
Failed emissions test on Lincoln Nautilus (2.0L EcoBoost (250HP) / 2.7L Twin-Turbo V6 (335HP Black Label))
Lincoln Nautilus OBD-II Port Location
The 16-pin diagnostic connector is located Under driver side steering column. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Lincoln Nautilus

Historical warranty claims and technical repair bulletins for Lincoln Nautilus 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 Nautilus.

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

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 Nautilus equipped with 2.0L EcoBoost (250HP) / 2.7L Twin-Turbo V6 (335HP Black Label).

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 Nautilus equipped with 2.0L EcoBoost (250HP) / 2.7L Twin-Turbo V6 (335HP Black Label).

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 Nautilus equipped with 2.0L EcoBoost (250HP) / 2.7L Twin-Turbo V6 (335HP Black Label).

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 Nautilus equipped with 2.0L EcoBoost (250HP) / 2.7L Twin-Turbo V6 (335HP Black Label).

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

Equipment for Diagnosing Lincoln Nautilus (P0137)

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Direct-Fit Replacement Part

Lincoln Nautilus OEM Replacement Sensor

4.7 / 5.0 (Verified Fit)

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

$45 – $95 Prime
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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
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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 NautilusVerified direct-fit pricing from Denso, Bosch, Motorcraft, and ACDelco on Amazon.
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Other Common Fault Codes on Lincoln Nautilus

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

4. Lincoln Nautilus P0137 FAQs

What causes code P0137 to trigger on a Lincoln Nautilus?

On the Lincoln Nautilus (2.0L EcoBoost (250HP) / 2.7L Twin-Turbo V6 (335HP Black Label)), 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 Nautilus?

On the Lincoln Nautilus, the 16-pin DLC diagnostic connector is located Under driver side steering column. 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 Nautilus 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.