What does the P1624 trouble code mean?
2 Answers
P1624 trouble 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, serves 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: 1. False fault: The fault light is on, but there is no actual fault with the car. 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. 2. Intermittent fault: The fault light turns on and off intermittently, and the fault appears and disappears. This may be caused by loose sensor wiring harnesses, poor contact at certain connectors, etc. 3. True fault: Usually accompanied by obvious fault symptoms.
Last time my car suddenly showed the P1624 trouble code, which was really frustrating. After checking some information, I found it's mainly related to the engine immobilizer system, possibly due to issues with the key chip recognition or communication faults in the computer module. Once I tried removing and reinserting the key, and it actually worked. However, it's best to go to a professional shop to read the specific data with a diagnostic tool and check if there's any loose wiring harness connector. This fault might even lock the car and prevent it from starting, especially noticeable during cold starts. My neighbor's Sagitar had this issue before, and it was finally resolved by replacing a new key, costing over 600 yuan in total.
