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P0137 on Dodge Hornet

O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)

Factory diagnostic protocol and troubleshooting wire for fault code P0137 specifically for the Dodge Hornet (2023–2026, 2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD)).

Verified OEM Telemetry & Field Repair Tree
Dodge Hornet2023–2026
Dodge Hornet
SUV2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD)
Reliability
Sensor Voltage Ref
0.1V – 5.0V Ref
Hornet 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 Dodge Model:
Diagnose P0137 on Specific Hornet Model Year:

1. Symptoms of P0137 on Dodge Hornet

When the Engine Control Module (ECM/PCM) on your Dodge Hornet (2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD)) logs fault code P0137, drivers commonly observe:

Check Engine Light on on Dodge Hornet (2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD))
Downstream sensor voltage consistently below 0.15V on scan tool on Dodge Hornet (2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD))
Failed emissions test on Dodge Hornet (2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD))
Dodge Hornet OBD-II Port Location
The 16-pin diagnostic connector is located Under driver steering column lower trim. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Dodge Hornet

Historical warranty claims and technical repair bulletins for Dodge Hornet point to the following failure distribution:

55%
Exhaust leak upstream of or directly at the Sensor 2 bung letting in fresh air (Dodge OEM Part)
25%
Faulty downstream oxygen sensor (Dodge OEM Part)
12%
Short to ground in sensor signal wire (Dodge OEM Part)
8%
Extremely lean exhaust condition (Dodge OEM Part)
* Source: Synthesized from NHTSA ODI field repair telemetry and verified OEM Technical Service Bulletin (TSB) repair tree frequency percentiles for Dodge Hornet.

3. Step-by-Step DIY Repair Guide for Dodge Hornet

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 Dodge Hornet equipped with 2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD).

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 Dodge Hornet equipped with 2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD).

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 Dodge Hornet equipped with 2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD).

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 Dodge Hornet equipped with 2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD).

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

Equipment for Diagnosing Dodge Hornet (P0137)

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Dodge Hornet OEM Replacement Sensor

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Direct-fit replacement assembly engineered to OEM tolerances for Dodge Hornet.

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Sensor Signal Voltage Meter

AstroAI Auto-Ranging Digital Multimeter

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

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BlueDriver Bluetooth Pro OBDII Scan Tool

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

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Other Common Fault Codes on Dodge Hornet

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Dodge Hornet:

4. Dodge Hornet P0137 FAQs

What causes code P0137 to trigger on a Dodge Hornet?

On the Dodge Hornet (2.0L Turbo (265HP) / R/T PHEV (288HP / eAWD)), 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 Dodge Hornet?

On the Dodge Hornet, the 16-pin DLC diagnostic connector is located Under driver steering column lower trim. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.

Can I safely drive my Dodge Hornet 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.