This post details about What is P0134 air fuel ratio sensor?, What does an air fuel ratio sensor do?, Where is the AF sensor located?
What is P0134 air fuel ratio sensor?
P0134 refers to the specific diagnostic trouble code (DTC) for the air fuel ratio sensor circuit No activity detected in the bank 1 1 sensor. This code indicates that the sensor is not providing any signal or that the signal is out of range, which may affect engine performance and emissions.
What does an air fuel ratio sensor do?
An air-fuel ratio sensor, also known as an oxygen sensor, measures the amount of oxygen in a vehicle’s exhaust gas. It provides feedback to the engine control unit (ECU) to adjust the air fuel mixture for optimal combustion and to reduce emissions.
Where is the AF sensor located?
The air ratio (AF) sensor is usually located in the exhaust system, near the engine, before the catalytic converter. In most vehicles, there are usually one or more sensors installed along the exhaust pipe.
The air-fuel ratio detected by the AF sensor is the ratio of air to feed into the engine’s combustion chamber. The sensor detects the amount of oxygen remaining in the exhaust gas after combustion, which indicates whether the air fuel mixture is too rich (excess fuel) or too lean (excess air). This information helps the ECU adjust fuel injection to maintain the correct air-to-air fuel ratio for efficient engine operation and emissions control.
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