O₂ Sensor Simulator – Diagnostic Tool for Catalytic Converter & ECM Testing

Simulate downstream O₂ sensor signals and diagnose catalytic converter or ECM issues with precision.

This professional-grade O₂ Sensor Simulator helps technicians identify whether a failing oxygen sensor or a faulty catalytic converter is causing incorrect data readings in the Engine Control Module (ECM).

✅ Key Benefits:

• ✅ Simulates O₂ sensor signals to assist in diagnosis

• ✅ Accurately tests O₂ sensor functionality

• ✅ Helps detect catalytic converter efficiency problems

• ✅ Clarifies ECM data for smarter troubleshooting

• ✅ Ideal for use in professional diagnostic environments

⚙️ How It Works:

This tool produces a slow-varying signal (~0.45V–0.6V) that mimics a working post-catalyst O₂ sensor. When connected in place of a downstream sensor, it allows you to monitor ECM behavior and isolate the root cause of emissions-related codes like P0420.

📦 What’s Included:

• Fully assembled O₂ Sensor Signal Simulator

• Compatible leads for universal 4-wire O₂ harness connections

• Setup guide with reference voltage chart

⚠️ IMPORTANT LEGAL NOTICE

This tool is strictly for diagnostic and testing purposes only.
It is not intended to bypass or disable emissions systems or be used on public roads.
Always comply with local, state, and federal laws when performing vehicle diagnostics.