22629AA012 Subaru SEN ASSY-EXH TEMP, Price: 60.12$, Weight: 0.261kg

Exhaust Temperature Sensor Assembly

This exhaust temperature sensor is a key protection part for Subaru engines with catalytic converter monitoring. It is needed to measure heat in the exhaust stream so the ECU can keep emissions under control and protect expensive components from overheating.

How It Works ⚙️

The sensor sits in the exhaust and reads temperature using an internal heat-sensitive element. It sends a changing signal to the ECU. When exhaust heat rises too high, the ECU can adjust fuel mixture and ignition timing, and in some setups it may trigger safety strategies to reduce load and prevent damage.

What Happens If It Fails ❗

A weak or dead sensor can cause wrong temperature readings, leading to poor fuel control and delayed protection. Common results include check engine light, reduced power (limp mode), higher fuel use, rough running, failed emissions test, and in worst cases overheating that can shorten the life of the catalytic converter or turbo-related parts.

Why Replace on Time ✅

Replacing a failing exhaust temp sensor restores correct ECU decisions, stable drivability, and keeps exhaust hardware safe from extreme heat.

Compatibility

• Subaru Impreza
• Subaru Forester
• Subaru Legacy