Bosch 0258006511 - Lambda sensor with vehicle-specific connector

Bosch 0258006511 – Precision Lambda Sensor

The Bosch 0258006511 is a high‑performance lambda (oxygen) sensor designed for modern internal combustion engines. It delivers accurate air‑fuel mixture data to the engine control unit (ECU), enabling optimal fuel injection, reduced emissions, and improved engine efficiency.

Key Features

• Vehicle‑Specific Connector: The sensor comes with a dedicated plug that matches the wiring harness of the target vehicle, ensuring seamless installation without the need for adapters or additional wiring.
• Four‑Pole Design: Equipped with four electrical contacts—two for power supply (12 V), one for signal output, and one ground—the sensor provides a robust and reliable connection in high‑temperature exhaust environments.
• Wide Operating Temperature Range: Engineered to withstand temperatures from –40 °C to +200 °C, the sensor maintains performance throughout cold starts, hot running conditions, and after‑treatment systems.
• Rapid Response Time: With a response time of less than 100 ms, the sensor quickly detects changes in exhaust oxygen levels, allowing the ECU to adjust fuel delivery instantly for optimal combustion.
• Durable Construction: The sensor housing is made from high‑temperature resistant materials that resist corrosion and mechanical shock, ensuring long service life even under harsh operating conditions.

Technical Specifications

Installation Guide

1. Disconnect the Battery: For safety, remove the negative battery terminal before working on the exhaust system.
2. Locate the Existing Sensor: The sensor is positioned after the catalytic converter. Remove any protective covers or clamps securing it in place.
3. Remove Old Wiring Harness: Carefully detach the old connector, noting its orientation and pin configuration.
4. Attach New Connector: Insert the vehicle‑specific plug of the Bosch 0258006511 into the harness. Ensure a snug fit to avoid loose connections.
5. Secure the Sensor: Reinstall any clamps or brackets that hold the sensor in position, tightening them evenly to prevent vibration damage.
6. Reconnect Battery and Test: Restore the battery connection and start the engine. Use an OBD‑II scanner to verify that the ECU is receiving a stable lambda signal and that emissions readings are within acceptable ranges.

Performance Benefits

• Improved Fuel Economy: Accurate air‑fuel ratio monitoring allows the ECU to fine‑tune injection timing, reducing fuel consumption by up to 5% in some cases.
• Lower Emissions: By maintaining stoichiometric combustion (14.7:1 air/fuel), the sensor helps keep CO₂, NOx, and HC emissions below regulatory limits.
• Enhanced Engine Longevity: Precise lambda readings prevent over‑rich or under‑rich conditions that can damage catalytic converters and spark plugs.
• Consistent Performance Across Conditions: The sensor’s wide temperature tolerance ensures reliable operation from cold starts to high‑speed cruising.

Maintenance Tips

While the Bosch 0258006511 is designed for durability, regular checks can extend its life:

• Inspect the connector for corrosion or loose pins during routine maintenance.
• Verify that the sensor housing remains free of soot buildup; clean gently with a soft brush if necessary.
• Check wiring insulation for cracks or damage, especially near bends and heat sources.

Compatibility Overview

The sensor is specifically engineered for vehicles that use the same harness configuration. Commonly listed models include:

• Nissan Almera II (3‑door & 5‑door)
• Nissan Almera Tino
• Nissan Primera 5‑door

For other makes and models, confirm the harness pinout before installation to ensure proper functionality.

Conclusion

The Bosch 0258006511 Lambda Sensor delivers reliable, high‑precision air‑fuel mixture data essential for modern engine management. Its vehicle‑specific connector eliminates installation headaches, while its robust construction and rapid response time guarantee long‑term performance. Whether you’re repairing a single sensor or upgrading an entire exhaust system, this component is a trusted choice for maintaining optimal engine efficiency and emissions compliance.