How to diagnose, repair, and info on causes of a P0438 engine code which involves the bank 2 sensor 1 catalyst temperature oxygen sensor circuit which is high. Also includes links to relevant forum topics on the code.

2020年3月3日 · 当 pcm 检测到催化剂温度传感器信号时，会设置故障代码 p0438。这通常表示电路开路。 相关诊断代码包括： p0435 催化剂温度传感器电路故障（组 2，传感器 1） p0436 催化剂温度传感器电路范围/性能（组 2，传感器 1） p0437 催化剂温度传感器电路低（组 2，传感器 …

2024年1月24日 · The P0438 code indicates an issue with the catalyst efficiency of engine bank 2. Symptoms may include decreased engine performance, hesitation while accelerating, or stalling. Diagnosing the P0438 code requires the use of a scanner, volt/ohmmeter, and temperature gun.

下面就为大家详细解析p0438故障码的含义和解决方法。 一、故障码的含义. p0438故障码是指发动机控制模块（ecm）检测到催化转化器效率异常低的问题，此问题发生后会触发电子控制模块（ecu）产生该故障码，并点亮检测仪表盘上的故障灯。 二、故障码的可能原因

2025年1月29日 · What does the P0438 code mean? The P0438 code is a diagnostic trouble code (DTC) that signals an issue with the catalyst temperature sensor circuit. Specifically, it pertains to Bank 2 Sensor 1 in your vehicle. This sensor plays a crucial role in monitoring the temperature of the catalytic converter.

2024年9月5日 · The P0438: Catalyst Temperature Sensor Circuit High (Bank 2, Sensor 1) means that the sensor monitoring the temperature of the catalytic converter on Bank 2 (Sensor 1) is sending a high signal. This usually happens when the sensor is faulty, the voltage is too high, or there are issues with the wiring.

2019年4月18日 · Repair Information for P0438 code. Learn what Catalyst Temperature Sensor High Input Bank 2 Sensor 1 means, location and how to repair?

What is OBD-II Code P0438? OBD-II Code P0438 implies that there is an issue with the temperature sensor in the catalytic converter, specifically on the second bank of the engine. Bank 2 refers to the firing order of the cylinders, which helps identify which side of the engine the problem is occurring.

The P0438 code indicates that the Catalyst Temperature Sensor for Bank 2 Sensor 1 is registering a high input. This sensor is responsible for monitoring the temperature of the catalytic converter, which plays a crucial role in reducing harmful emissions from the vehicle.

OBD2 Code P0438 Isuzu definition: The optical sensor provides a high resolution signal to the Powertrain Control Module (PCM) by counting pulses on the sensor disk located in the injection pump. The high resolution is one of the most important inputs …