What does the P1624 request fault light activation mean?
2 Answers
P1624 fault code means the malfunction indicator lamp request signal is currently active, applicable to Audi, Volkswagen, etc. The malfunction indicator lamp, also known as the check engine light, functions to illuminate a yellow or red engine symbol on the dashboard when the control module detects a fault. Below is an analysis of situations when the malfunction indicator lamp illuminates: False fault: The fault light turns on, but there is no actual fault with the car itself. Since the onboard computer can only recognize voltage, occasional voltage fluctuations may also be judged as a fault, causing the fault light to illuminate and record. Intermittent fault: The fault light turns on and off intermittently, with the fault appearing and disappearing. This may be caused by loose sensor wiring harnesses, poor contact at certain connectors, etc.
After driving for so many years, one time the check engine light came on showing P1624, and I was so anxious that I immediately looked it up. It turns out P1624 is a brand-specific code; for example, in General Motors or Toyota vehicles, it indicates an issue with the throttle position sensor or control motor, possibly due to loose wiring or sensor aging. The car might feel sluggish during acceleration or have unstable idling, and I almost rear-ended someone that time. I went straight to the repair shop, where the mechanic used a computer scan to confirm the issue and replaced a sensor wire, fixing the problem. Don't ignore an activated check engine light—get it checked promptly to avoid accidents.
