P0134 – O2 Sensor Circuit No Activity Detected Sensor 1 Bank 1: The front heated oxygen sensor (or O2 sensor 1) is placed into the exhaust manifold. It detects the amount of oxygen in the exhaust gas ...
Don't let failing oxygen sensors compromise your engine's performance. O2 sensors are critical to emissions control on your car, SUV or truck. As the name implies, the O2 sensor (also called an ...
P0155 – O2 Sensor Heater Circuit Malfunction Bank 2 Sensor 1: Oxygen sensors (O2S) or heated oxygen sensors (HO2S) need to reach a minimum operating temperature of 750 degrees Fahrenheit to produce an ...
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