Bosch 0 261 222 02K Evaporative Emissions System Leak Detection Pump

The Bosch 0 261 222 02K is an Original Equipment evaporative emissions system leak detection pump, also known as a Self-Diagnosis Module (SDM). As part of the vehicle's EVAP (Evaporative Emission Control) system, this pump continuously monitors the system for leaks, helping ensure proper emissions compliance and fuel vapor containment.

The leak detection pump works in conjunction with the charcoal canister and purge valve to prevent fuel vapor from escaping into the atmosphere. By pressurizing the EVAP system and measuring pressure decay, it can identify leaks and trigger diagnostic trouble codes when a fault is detected.

Key Features:

• Original Equipment (OE) quality — meets or exceeds factory specifications in fit, form, and function
• 100% new component — not remanufactured or rebuilt
• Constructed from high-grade industrial plastic engineered to withstand a wide range of operating temperatures
• Ensures proper EVAP system function, fuel economy, drivability, and emissions compliance
• Direct OE replacement for trouble-free installation

Common symptoms of a failing leak detection pump include an illuminated Check Engine light (typically EVAP-related DTCs), increased fuel odor, and reduced fuel economy. Replacing the pump with a genuine Bosch unit restores proper EVAP system diagnostics and emissions performance.