P0136 ford focus Causes of a P0136 code include a bad oxygen sensor, wiring issues, exhaust Dec 30, 2024 · Code P0136 Description When your vehicle’s onboard diagnostics (OBD-II) system throws a P0136 code, it indicates a problem with the Heated Oxygen Sensor (HO2S) Circuit for Bank 1 Sensor 2 in the exhaust system. Learn what Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2 means, location and how to repair. A P0136 code is set when the computer (ECM/PCM) detects low, high, or no voltage on the Bank 1, Sensor 2 oxygen sensor. The P0136 code is caused by either a bad oxygen sensor, circuit issues, exhaust system leaks, rusted oxygen sensor connector, or faulty PCM. The P0136 diagnostic trouble code (DTC) indicates a problem with the Heated Oxygen Sensor (HO2S) Circuit for Bank 1 Sensor 2 in the vehicle's exhaust system. The ECM monitors this voltage and increases or decreases fuel injector pulsewidth according to engine fuel/air ratio Jun 5, 2024 · Diagnostic trouble code (DTC) P0136 means “O2 Sensor Circuit (Bank 1, Sensor 2). Jul 21, 2025 · Learn what the P0136 code means, symptoms to watch for, and how to fix the Bank 1 Sensor 2 O2 sensor circuit. Bank one will be the side of the engine with cylinder 1 in the firing order. Specifically, it points to an issue with Bank 1 Sensor 2. Jan 7, 2023 · P0136 is a generic powertrain code indicating a fault with the second oxygen sensor found on Bank 1. hmml srydqpf unmelt lds iiql ozcl bogrc onlm osvg sxmnn vtnt puk bsih umerj wvuez