Description
Overview
High-quality Bosch ABS/ESP control module and pump assembly designed for Peugeot 307 vehicles within the PSA group. This integrated unit combines the ABS hydraulic block, pump and electronic control unit (ECU) to manage anti-lock braking and electronic stability control, restoring proper braking performance and vehicle stability.
Key Features
- Complete ABS/ESP assembly including hydraulic block and electronic control for direct replacement.
- Manufactured by Bosch for OE-level fit and function.
- Compatible with original PSA part numbers for straightforward cross-referencing.
- Suitable for professional workshops and experienced DIY mechanics.
Function And Common Failure Modes
The ABS/ESP module monitors wheel speed sensors and modulates hydraulic pressure during braking to prevent wheel lock-up and support vehicle stability. Common causes of failure include electrical faults (damaged connectors, wiring), internal pump or valve wear, hydraulic contamination, and corrosion. Symptoms may include ABS warning light, loss of ABS or ESP function, unusual brake pedal feel, or noise from the pump.
Replacement And Installation Notes
Installation should be carried out by a qualified technician or an experienced DIY mechanic. Typical replacement steps:
- Disconnect the vehicle battery before starting to avoid electrical damage.
- Locate the ABS/ESP unit near the brake master cylinder and carefully disconnect electrical connectors.
- Support and cap brake lines to minimise fluid loss, then unbolt and remove the hydraulic unit.
- Install the new unit, reconnect brake lines and electrical connectors, then bleed the brake system thoroughly to remove air.
- Perform a diagnostic reset and run a system scan to initialise the new ABS/ESP module and confirm there are no fault codes.
After replacement, a proper brake bleed and ECU programming or adaptation may be required to restore full functionality.
When To Replace
Replace the unit if the ABS or ESP warning light remains on and diagnostic checks indicate a pump or module fault, if the pump runs continuously, or if hydraulic leaks or severe corrosion are present. Lifespan depends on driving conditions and maintenance; exposure to moisture and road salt accelerates electrical and hydraulic degradation.
Technical Information
Manufacturer: Bosch / PSA
Model: Peugeot 307 / PSA Group
Product Codes: 9660535780, 0265950374, 0265234152, 9649988180
Additional Numbers: 4541J3, 265234152, 265950374
Please verify part numbers and vehicle compatibility before ordering. If in doubt, provide your VIN to confirm exact fitment.
