By Laurent Marchand | Senior European Auto Correspondent
If you want performance, you look for the GT trim or the upcoming PSE (Peugeot Sport Engineered) variant.
While there isn't a new Peugeot model officially named "09b7," this specific code refers to a major electrical fault often found in the Peugeot/Citroën family, specifically related to the Engine Relay Unit (+APC Relay). 09b7 peugeot hot new
Because you can brake-regen the inside rear wheel while accelerating the outside front wheel (torque vectoring by software), the 09B7 turns in like a mid-engine sports car. That is the "hot new" magic.
Engine fault - Have your vehicle repaired: Peugeot / Citroën - klavkarr Decoding the 09B7: Is This the Hottest New
If you see a Peugeot for sale and the owner mentions it has the "B7 ECU," pay the premium. Drive it. You will immediately understand why this obscure code is generating "hot new" headlines. The heat is real, and it’s coming from a small silver box under the hood labeled 09B7.
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Hidden within the 09B7’s firmware is a feature called "Dynamic Expansion Slot." Inside the Peugeot app, owners of MY2026 vehicles will see an option to purchase an "Overboost" profile. For a subscription fee (or a one-time €500 payment), the 09B7 flashes a new map that adds 30 bhp and removes the electronic top-speed limiter (from 155 mph to 168 mph). This makes the 09B7 one of the first OEM ECUs designed for post-sale power upgrades.
Crank but no start: The engine turns over but refuses to fire because the ignition relay isn't providing power to the necessary components. While there isn't a new Peugeot model officially