What is the reason for fault code 00546?
2 Answers
Cars are equipped with numerous sensors, which display different fault codes when they detect issues. When fault code 00546 appears, the corresponding measures are: clean the throttle valve, check whether G188 is functioning reliably, and if it is working normally, replace the engine wiring harness. More information about automotive fault self-inspection is as follows: 1. The angle sensor 1-G187 and angle sensor 2-G188 in the throttle unit are used to determine the current position of the throttle valve and transmit this information to the engine control unit. 2. The vehicle fault self-inspection terminal and automotive fault diagnostic tool (also known as a car decoder) are portable intelligent automotive fault self-inspection devices used to detect car faults. Users can quickly read faults in the car's electronic control system and, through the LCD screen, display fault information to promptly identify the location and cause of the fault.
Last time I encountered this P0546 trouble code, it was really scary. That day I was driving my old diesel car when the dashboard suddenly lit up with a warning light. After searching online, I found it was related to exhaust temperature issues. A friend told me it was because the sensor falsely reported high temperature, possibly due to sensor aging or circuit shorting. If left unchecked, the engine emission system might malfunction, reducing exhaust treatment efficiency. Over time, this would harm air quality and waste fuel. I drove to the repair shop, and the mechanic fixed it by simply replacing the sensor. They also reminded me to watch out for loose connections or corroded wiring, saying regular maintenance could prevent such issues. These problems are quite common in vehicles over 10 years old, especially those frequently used for long-distance travel.
