Description
Control module, ABS pump, ABS block with ESP Bosch for Peugeot 307 CC. Supplied with a piece of wiring.
This Bosch ABS/ESP control unit with pump assembly is intended for Peugeot 307 CC vehicles and is supplied together with a section of wiring harness to facilitate replacement. The module combines the hydraulic pump, valve block and electronic control unit that manage anti-lock braking and electronic stability functions. For mechanics and experienced DIY enthusiasts, this unit restores ABS modulation and ESP functionality when the original unit has failed or developed electrical faults.
Technical Information
- Manufacturer: Bosch
- Model: Peugeot 307 CC
- Product Codes: 0265950093
- Additional Numbers: 4541W5, 4541W6, NFP
Function And Typical Symptoms
The ABS/ESP unit controls hydraulic brake pressure via the pump and valve block to prevent wheel lock-up and to support vehicle stability control. Common symptoms of a failing unit include persistent ABS or ESP warning lights on the dashboard, intermittent loss of ABS function, unusual pump noise during ABS activation, and in some cases brake fluid leaks around the valve body or electrical connector faults.
Compatibility And Fitment
Designed for Peugeot 307 CC models equipped with Bosch ABS/ESP systems. Always verify part numbers listed in the Technical Information to confirm fitment for a given vehicle. The supplied wiring piece can help match electrical connections during replacement, but connector types and mounting brackets should be inspected to ensure direct fit.
Replacement Procedure (Overview)
Replacement of the ABS/ESP module should be performed by a trained technician or an experienced DIYer with appropriate tools. Typical steps:
- Isolate Battery Power: Disconnect the vehicle battery before beginning to avoid electrical damage.
- Access Unit: Remove any undertray or trim and unbolt the ABS pump/control unit from its mounting bracket.
- Disconnect Hydraulic Lines: Carefully disconnect brake lines from the valve block. Be prepared to catch brake fluid and avoid contamination.
- Electrical Connections: Unplug the electrical connectors and replace any damaged terminals or wiring using the supplied harness section if required.
- Installation: Fit the replacement unit, tighten mounting hardware to manufacturer torque where available, reconnect hydraulic lines and electrical connectors.
- Bleeding And Calibration: Thoroughly bleed the brake system to remove air. After installation, perform diagnostic checks and ESP/ABS calibration or registration with an OBD diagnostic tool as required by the vehicle.
Installation Recommendations
Use new sealing washers for brake line fittings and fresh brake fluid of the correct specification. Work in a clean environment to prevent contamination of the hydraulic system. After installation, carry out a full brake bleed and use a diagnostic tool to clear fault codes and perform any required ABS/ESP adaptations. If you are not equipped with the proper diagnostic equipment, consider professional assistance for final calibration and road testing.
Most Common Failure Reasons
ABS/ESP modules typically fail due to a combination of electrical and hydraulic issues: corrosion of electrical connectors, water ingress, internal pump or valve wear, contamination in the brake fluid, and damaged wiring harnesses. Long-term exposure to road salt and moisture accelerates connector and valve block corrosion, while electrical surges or short circuits can damage the control electronics.
For mechanics and competent DIYers, replacing the ABS/ESP module with the correct Bosch unit and following proper installation and bleeding procedures will restore braking modulation and stability control functions. Always clear and review diagnostic trouble codes after replacement to confirm the system is operating correctly.
