Hi, I have a question about the readiness of the Oxygen Sensor Heater (HO2) monitor: Some weeks ago I had a P0134 (with a '96 Plymouth Voyager). The broken O2 sensor got replaced …

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.

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

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)."

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 …

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 …

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!

May 23, 2025 · What Does the P0134 Code Mean? P0134 Code Stand For “O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)”. The P0134 trouble code indicates that the front oxygen …

DTC P0134 signals that the powertrain control module (PCM) has not detected any activity from the oxygen (O2) sensor located before the catalytic converter on Bank 1 of your engine.