Hi, I have a check engine light on, and I had it scanned to reveal the following codes: p0140 (o2 sensor circuit no activity detected bank 1 sensor 2) and p0161 (o2 sensor heater circuit bank 2 sensor 2).

2019年4月12日 · The P0140 code is set when the voltage signal sent from the sensor to the Engine Control Module is constant. Possible Symptoms Engine Light ON (or Service Engine Soon Warning Light)

Code P0140 is typically triggered when your vehicle’s powertrain control module detects a problem with the post-catalytic monitoring oxygen sensor circuit. The most common symptoms of a P0140 include a lit or blinking check engine light, increased tailpipe emissions, and failed emissions tests.

2024年12月21日 · P0140 code gets triggered when the Engine Control Module has detected inactivity from the oxygen sensor, also known as the air-fuel ratio sensor. This inactivity typically indicates that the oxygen sensor isn’t sending voltage signals back to the ECM, often due to a problem with the sensor’s heater circuit or the sensor itself.

2021年5月31日 · 汽车中的p0140是什么故障码？ p0140指的是氧传感器电路无作用，是第一排第二个氧传感器。 当出现这样的标志，说明该车辆的燃油系统或者是空气系统出现故障。

2025年3月1日 · Symptoms of P0140 include decreased fuel efficiency, poor engine performance, and the Check Engine Light illuminating, making it essential to address the issue promptly. To fix the P0140 code, use a scan tool to verify the code, replace the faulty O2 sensor, and inspect the exhaust system for leaks. Code P0140 Description

2017年6月16日 · P0140故障码，适用于所有汽车制造商，意思是氧传感器电路无作用（第1排，传感器 2）(O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 2))。 提示：快速查找故障码，可以关注“ 车主指南 ”公众号，回复故障代码，如：“ P0140 ”，即可获得对应故障码解释和解决方 …

2023年12月17日 · 故障码p0140通常表示氧传感器电路无作用（第1排，传感器2），即在汽车的电子控制单元（ecu）持续监控加热氧传感器时，无法检测到传感器的信号 ...

2024年12月13日 · 故障码P0140指的是氧传感器电路失效，即氧传感器在工作时未能捕捉到有效的活动信号（Bank 1, Sensor 2）。 在汽车领域，氧传感器的作用至关重要，它负责检测发动机排放气体中的氧气含量，以此调整燃油喷射量，确保发动机达到最佳空燃比。

P0140 is the OBD-II generic code which indicates that the O2 sensor for Bank 1, Sensor 2 failed respond to the fuel cutoff or fuel enrichment signals by the Engine Control Module (ECM). What causes the P0140 code?