Description of vehicle trouble code P0134 - Oxygen 02 Sensor Circuit No Activity Detected (Bank I Sensor 1)

What are the common symptoms of OBDII code P0134? - Common symptoms include poor fuel economy, rough idling, stalling, and the illumination of the check engine light.

Apr 8, 2025 · What does the P0134 error code mean? The P0134 diagnostic trouble code (DTC) stands for "Oxygen Sensor Circuit No Activity Detected (Bank 1, Sensor 1)."

Jan 7, 2023 · Find out what the P0134 code means, the causes and symptoms of this error code, and how to fix it.

P0134 means the power‑train control module (PCM/ECU) sees no voltage activity from Bank 1 Sensor 1 (upstream O₂ sensor). Drivers typically notice a check‑engine light, reduced fuel …

Dec 15, 2024 · What does the P0134 Oxygen Sensor Circuit No Activity Detected (Bank 1, Sensor 1) mean? P0134 code gets triggered when the Engine Control Module has detected …

Code P0134 is triggered when the powertrain control module or PCM determines that the oxygen sensor voltage is hovering around 450 millivolts. This value varies with each vehicle, however …

Mar 24, 2022 · Check engine light code P0134 means O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1). Find out how to fix it in this article!

Nov 5, 2024 · The P0134 code refers to a specific issue with the oxygen sensor in your vehicle. This code indicates that the engine control module (ECM) is detecting no activity from the O2 …

Jan 2, 2026 · Learn how to diagnose and repair the P0134 oxygen sensor “no activity” code. We cover symptoms, technical causes, and step-by-step replacement procedures.