Peugeot - A9b7

Because this code relates to the ignition supply, owners often report issues such as:

When a Peugeot's diagnostic system triggers the A9B7 code, it typically points to a short circuit to positive a9b7 peugeot

While this code can appear on various PSA Group vehicles using similar BSI architecture, it is frequently documented on: Peugeot 208 (A9) Because this code relates to the ignition supply,

When you plug a diagnostic tool into a modern Peugeot—such as a 308, 5008, or Partner—and see the code , it indicates a specific electrical issue related to the ignition system. This code, often accompanied by warnings like "Engine repair needed" or "Emission control fault," is generally defined as a "Fault in the ignition positive relay (+APC) or in the output harness from the relay: Short circuit to positive" . A Peugeot dealer or specialist with a full

If hardware checks out, the BSI may have corrupted software. A Peugeot dealer or specialist with a full Diagbox license can perform a "Download" or "Configuration" procedure. This is essentially a firmware reflash.