Delphi ES10890 Oxygen Sensor - Rear

Delphi ES10890 Rear Oxygen Sensor

The Delphi ES10890 is a heated rear oxygen sensor built for precise exhaust monitoring on select Honda applications. It uses a 4-wire design, a square connector, and an 18 x 1.5 mm thread size to match the original-style service fit for the vehicle listed below.

Compatible with 2001-2006 Honda Insight, rear, and 2002-2004 Honda CR-V, rear. Delphi’s OE heritage and long-standing supplier experience are reflected in the sensor design and materials used in this aftermarket replacement.

Key Features

• Heated oxygen sensor for rear exhaust position monitoring
• 4-wire configuration for signal and heater circuit operation
• Square connector shape for OE-style electrical connection
• 18 x 1.5 mm thread size for direct-thread installation
• 280.0 overall length for application-specific routing
• Package includes the oxygen sensor and instruction sheet

Detailed Description

Delphi ES10890 is an emission control sensor designed for rear placement on select Honda vehicles, including the Honda Insight and Honda CR-V. As a heated oxygen sensor, it helps the engine management system monitor exhaust oxygen content after the catalyst, supporting accurate fuel control and emissions feedback. The Delphi ES10890 combines OE-based engineering knowledge with the fitment and connector details needed for a direct replacement service part.

This part cross-references DENSO Auto Parts (e.g., 234-4125, 234-4361) for the same application.

What It Helps Address

• Check engine light related to rear oxygen sensor performance
• Faulty air-fuel ratio feedback from the exhaust stream
• Emissions test failures tied to sensor response issues
• Rough fuel control caused by inaccurate oxygen readings
• Replacement needs for a worn or aging rear sensor

Installation Notes and Tips

Verify rear position fitment before installation on the Honda Insight or Honda CR-V. Match the 4-wire square connector and 18 x 1.5 mm thread size to the original sensor, and route the harness to avoid heat and abrasion. Use the included instruction sheet during installation and confirm all electrical connections are secure before clearing diagnostic codes.

Quality Assurance

Delphi builds this sensor using OE experience developed through long-term supply relationships with major automakers. That background is reflected in the ES10890’s application-specific design for rear oxygen sensor service on the listed Honda models.