How to Resolve Engine Immobilizer Authentication Failure?

[VanRichard]

Engine immobilizer authentication failure can generally be attributed to the following reasons: 1. The internal chip of the key is not matched/locked (not locked in the immobilizer control unit). 2. Fault in the immobilizer read coil. 3. Communication failure between the immobilizer coil and the immobilizer control unit. 4. Internal fault in the immobilizer control unit and communication failure with the engine control unit. 5. Electromagnetic interference, etc. Solution: Read the fault codes to identify the fault point based on the fault code content, and check the current status of each system by reading the data stream. How the engine immobilizer system works: The car's ignition key contains an electronic chip, each with a fixed ID (equivalent to an identification number). The car can only start when the key chip's ID matches the ID on the engine side. Conversely, if they do not match, the car will immediately cut off the circuit automatically, preventing the engine from starting.