P0137 on Honda Accord
Factory diagnostic protocol and troubleshooting wire for fault code P0137 specifically for the Honda Accord (2020–2026, 1.5L Turbo (192HP) / 2.0L Two-Motor Hybrid (204HP)).
1. Symptoms of P0137 on Honda Accord
When the Engine Control Module (ECM/PCM) on your Honda Accord (1.5L Turbo (192HP) / 2.0L Two-Motor Hybrid (204HP)) logs fault code P0137, drivers commonly observe:
2. Most Likely Causes on Honda Accord
Historical warranty claims and technical repair bulletins for Honda Accord point to the following failure distribution:
3. Step-by-Step DIY Repair Guide for Honda Accord
Listen for exhaust ticking or black soot around flex pipe, flanges, and sensor bungs before the catalytic converter. on the Honda Accord equipped with 1.5L Turbo (192HP) / 2.0L Two-Motor Hybrid (204HP).
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 Honda Accord equipped with 1.5L Turbo (192HP) / 2.0L Two-Motor Hybrid (204HP).
Unplug harness, remove old sensor with 7/8 socket, install replacement sensor and plug firmly. on the Honda Accord equipped with 1.5L Turbo (192HP) / 2.0L Two-Motor Hybrid (204HP).
Clear DTCs and verify B1S2 holds steady between 0.45V and 0.75V during steady highway cruising. on the Honda Accord equipped with 1.5L Turbo (192HP) / 2.0L Two-Motor Hybrid (204HP).
Equipment for Diagnosing Honda Accord (P0137)
Honda Accord OEM Replacement Sensor
Direct-fit replacement assembly engineered to OEM tolerances for Honda Accord.
AstroAI Auto-Ranging Digital Multimeter
Essential for testing 0.1V–5.0V sensor reference signals, ground continuity (<0.20Ω), and harness resistance.
BlueDriver Bluetooth Pro OBDII Scan Tool
Reads and clears enhanced codes (ABS, Airbag, Transmission, Engine) & live freeze-frame telemetry on phone.
Other Common Fault Codes on Honda Accord
Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Honda Accord:
4. Honda Accord P0137 FAQs
What causes code P0137 to trigger on a Honda Accord?
On the Honda Accord (1.5L Turbo (192HP) / 2.0L Two-Motor Hybrid (204HP)), 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 Honda Accord?
On the Honda Accord, the 16-pin DLC diagnostic connector is located Lower dashboard above accelerator pedal. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.
Can I safely drive my Honda Accord 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.