P0137 on Buick Enclave
Factory diagnostic protocol and troubleshooting wire for fault code P0137 specifically for the Buick Enclave (2020–2026, 3.6L V6 (310HP) / 2.5L Turbo 4-Cyl (328HP)).
1. Symptoms of P0137 on Buick Enclave
When the Engine Control Module (ECM/PCM) on your Buick Enclave (3.6L V6 (310HP) / 2.5L Turbo 4-Cyl (328HP)) logs fault code P0137, drivers commonly observe:
2. Most Likely Causes on Buick Enclave
Historical warranty claims and technical repair bulletins for Buick Enclave point to the following failure distribution:
3. Step-by-Step DIY Repair Guide for Buick Enclave
Listen for exhaust ticking or black soot around flex pipe, flanges, and sensor bungs before the catalytic converter. on the Buick Enclave equipped with 3.6L V6 (310HP) / 2.5L Turbo 4-Cyl (328HP).
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 Buick Enclave equipped with 3.6L V6 (310HP) / 2.5L Turbo 4-Cyl (328HP).
Unplug harness, remove old sensor with 7/8 socket, install replacement sensor and plug firmly. on the Buick Enclave equipped with 3.6L V6 (310HP) / 2.5L Turbo 4-Cyl (328HP).
Clear DTCs and verify B1S2 holds steady between 0.45V and 0.75V during steady highway cruising. on the Buick Enclave equipped with 3.6L V6 (310HP) / 2.5L Turbo 4-Cyl (328HP).
Equipment for Diagnosing Buick Enclave (P0137)
Buick Enclave OEM Replacement Sensor
Direct-fit replacement assembly engineered to OEM tolerances for Buick Enclave.
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 Buick Enclave
Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Buick Enclave:
4. Buick Enclave P0137 FAQs
What causes code P0137 to trigger on a Buick Enclave?
On the Buick Enclave (3.6L V6 (310HP) / 2.5L Turbo 4-Cyl (328HP)), 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 Buick Enclave?
On the Buick Enclave, the 16-pin DLC diagnostic connector is located Driver lower knee bolster panel. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.
Can I safely drive my Buick Enclave 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.