Exhaust Gas Temperature Sensor Circuit Range/Performance Problem (Bank 1)
There's an issue with the exhaust gas temperature sensor for Bank 1.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The exhaust gas temperature sensor is not providing correct readings, which could mean it's faulty or there's a wiring problem.
What the computer is actually seeing
The engine control module (ECM) monitors the voltage signal from the exhaust gas temperature sensor. If the voltage is outside the expected range (usually between 0.5V to 4.5V), it triggers a fault code.
What a healthy reading looks like
0.5V to 4.5V under normal operating conditions for the sensor signal.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Check the wiring and connectors for the exhaust gas temperature sensor for damage or corrosion. Repair as necessary. Decision: If okay, proceed to step 2. If damaged, repair/replace and clear codes.
Common causes
- Faulty exhaust gas temperature sensor
- Damaged wiring or connectors
- Poor electrical connections at the sensor
- Exhaust leaks near the sensor
- ECM software issue
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, but monitor performance and fix soon to avoid potential engine damage.
Will this code come back after clearing?
It might if the underlying issue isn't resolved.
Why might this code pair with other codes?
Other codes can indicate related issues with exhaust temperature or emissions systems.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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