P0137 on Acura MDX
Factory diagnostic protocol and troubleshooting wire for fault code P0137 specifically for the Acura MDX (2022–2026, 3.5L i-VTEC V6 (290HP) / 3.0L Turbo V6 (Type S 355HP / SH-AWD)).
1. Symptoms of P0137 on Acura MDX
When the Engine Control Module (ECM/PCM) on your Acura MDX (3.5L i-VTEC V6 (290HP) / 3.0L Turbo V6 (Type S 355HP / SH-AWD)) logs fault code P0137, drivers commonly observe:
2. Most Likely Causes on Acura MDX
Historical warranty claims and technical repair bulletins for Acura MDX point to the following failure distribution:
3. Step-by-Step DIY Repair Guide for Acura MDX
Listen for exhaust ticking or black soot around flex pipe, flanges, and sensor bungs before the catalytic converter. on the Acura MDX equipped with 3.5L i-VTEC V6 (290HP) / 3.0L Turbo V6 (Type S 355HP / SH-AWD).
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 Acura MDX equipped with 3.5L i-VTEC V6 (290HP) / 3.0L Turbo V6 (Type S 355HP / SH-AWD).
Unplug harness, remove old sensor with 7/8 socket, install replacement sensor and plug firmly. on the Acura MDX equipped with 3.5L i-VTEC V6 (290HP) / 3.0L Turbo V6 (Type S 355HP / SH-AWD).
Clear DTCs and verify B1S2 holds steady between 0.45V and 0.75V during steady highway cruising. on the Acura MDX equipped with 3.5L i-VTEC V6 (290HP) / 3.0L Turbo V6 (Type S 355HP / SH-AWD).
Equipment for Diagnosing Acura MDX (P0137)
Acura MDX OEM Replacement Sensor
Direct-fit replacement assembly engineered to OEM tolerances for Acura MDX.
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 Acura MDX
Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Acura MDX:
4. Acura MDX P0137 FAQs
What causes code P0137 to trigger on a Acura MDX?
On the Acura MDX (3.5L i-VTEC V6 (290HP) / 3.0L Turbo V6 (Type S 355HP / SH-AWD)), 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 Acura MDX?
On the Acura MDX, the 16-pin DLC diagnostic connector is located Driver side lower dash assembly. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.
Can I safely drive my Acura MDX 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.