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What is the meaning of OBD-II p0405 code , and what are the possible causes and how to solve this issue?
The OBD-II code P0405 stands for Exhaust Gas Recirculation (EGR) Sensor A Circuit Low and indicates that the EGR sensor A has a low voltage output. This fault can be caused by several different issues, including wiring problems, poor electrical connections in the circuit, a faulty EGR sensor, or an issue with other related components. Potential causes of this code may include damaged wiring in the circuit, poor electrical connections in the EGR sensor, a failed EGR sensor, and problems with sensors such as the throttle position sensor or mass airflow sensor. Solutions to this issue may include repairing or replacing any damaged wiring in the circuit, cleaning or replacing any faulty electrical connections, replacing the EGR sensor if it has failed, and testing and replacing any sensors that may be causing the issue.
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