1K0951605A 1K8951605A Anti Theft Alarm Siren Horn Compatible with VW EOS CC Passat Golf Tiguan Jetta Audi A1 A3 A4 A5 A6 TT Q5 Q7 About this item Part numbers: 1K0951605A ,1K0 951 605 A, 1K0951605B ,1K0 951 605 B, 1K0951605C ,1K0 951 605 C, 1K0951605D ,1K0 951 605 D. Interchange Part Number: 1K0951605F, 1K0 951 605 F, 1K8951605 ,1K8 951 605, 1K8951605A ,1K8 951 605 A, 1K8951605B ,1K8 951 605 B. Voltage: 12V. Number of plug pins: 3 pins. Size: STD . Warranty: 6 months. Package includes: Anti Theft Alarm Siren Horn x1. Product Description OE#: 1K0951605A ,1K0 951 605 A, 1K0951605B ,1K0 951 605 B, 1K0951605C ,1K0 951 605 C, 1K0951605D ,1K0 951 605 D. 1K0951605F, 1K0 951 605 F, 1K8951605 ,1K8 951 605, 1K8951605A ,1K8 951 605 A, 1K8951605B ,1K8 951 605 B. Voltage: 12V. Number of plug pins: 3 pins. Size: STD . Warranty: 6 months. Package includes: Anti Theft Alarm Siren Horn x1. Please confirm the product part number before purchase.If you can not make sure, please send us of your VIN . "01134 - Alarm Horn (H12): No Signal/Communication Possible Causes of Fault Code ""01134"" 1. Diagnostic Interface Problem: The diagnostic interface of the car is the key to connecting the ECU with external devices. If the interface is damaged or not connected correctly, it may cause communication interruption, thus causing the ""01134"" fault code. 2. Fault of the ECU itself: As the core component of the vehicle's brain, when there is a problem with its internal circuit or software, it will cause abnormal communication with the alarm horn, and then display this fault code. 3. Influence of other components: In addition to the ECU, other communication-related hardware on the vehicle, such as lines, sensors, etc., may also indirectly affect the appearance of the ""01134"" fault code due to aging, damage or poor contact. 4. The built-in battery of the horn is damaged: Test it by unplugging the plug when the car is locked. If the horn does not sound, it means that the built-in battery inside is broken. Steps to solve the "01134" fault code 1. Check the diagnostic interface: First, make sure that the diagnostic interface is properly connected and has no physical damage. If there is a problem with the interface, try to reconnect or replace the interface. 2. Professional ECU inspection: If the diagnostic interface is normal, it is recommended to send the vehicle to a professional repair shop, use professional equipment to read the fault code, and have a technician check whether the ECU has hardware or software failures. 3. Check other components: After confirming that there is no obvious problem with the ECU, it is also necessary to check other hardware components related to communication, including lines, sensors, etc., to ensure that they are in good condition. 4. Replace the alarm horn