How to solve Volkswagen P1624 trouble code?
2 Answers
Volkswagen P1624 trouble code causes and solutions are as follows: 1. False trouble: Cause: The ECU can only recognize voltage. Occasional voltage fluctuations may also be judged as a fault by the ECU, which will then light up the fault lamp and record it. Solution: In this case, simply use a computer tester (OBD device) to clear the trouble code. 2. Intermittent fault: Cause: Loose sensor wiring harness, poor contact of a connector, or intermittent signal transmission belong to this category. Solution: Secure the sensor wiring harness and check for poorly connected plugs. 3. Real fault: Symptom: Usually accompanied by obvious fault symptoms. Solution: It is recommended to go to a professional shop or 4S store for inspection and repair, and use a computer to match and eliminate the fault.
The Volkswagen P1624 trouble code is usually related to the anti-theft system. I've encountered this issue several times. Typically, it's caused by a problem with key fob matching - either weak key battery or lost programming. Try starting the vehicle with the spare key to see if it operates normally. If that doesn't work, open the hood to check for loose or corroded ECM module connectors, and use a basic scan tool to check for additional codes. Anti-theft system failures can prevent the car from starting, which is quite frustrating, so don't delay addressing it. I recommend regularly checking key fob condition during maintenance, and avoid exposing keys to strong magnetic fields to prevent interference. If DIY solutions don't work, visit a professional repair shop - they have VCDS software to reprogram the system. Spending a few hundred yuan solves the problem and prevents the risk of being stranded. I remember fixing an old Tiguan where this code appeared due to wiring harness aging - replacing a small component did the trick, which was totally worth it.
