Exhaust Gas Temperature Sensor 2 Circuit Range/Performance Problem
The exhaust gas temperature sensor 2 is reporting an out-of-range signal.
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 sensor monitors the temperature of the exhaust gases to help manage emissions. If it's not working right, it can signal dangerously high or low temperatures that could damage the exhaust system.
What the computer is actually seeing
The Engine Control Module (ECM) checks the temperature readings from sensor 2 to ensure they fall within expected parameters. If the temperature differs significantly from the setpoint (like being constantly too high or too low), it triggers a fault code.
What a healthy reading looks like
Typically, exhaust gas temperatures should range from 300°F to 1200°F during operation, depending on load and RPM.
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.
- 1Inspect wiring and connectors for damage or corrosion (check for 5V reference voltage at the sensor).
- 2Verify the exhaust gas temperature sensor is within specification. Test the resistance or voltage it produces at various temperatures (vs. a known good sensor).
- 3Check for exhaust leaks that may cause incorrect readings. Repair any leaks found.
- 4If all checks are normal, scan for related codes and consider checking the ECM for software updates or faults.
Common causes
- Faulty exhaust gas temperature sensor
- Wiring issue or short in the sensor circuit
- ECM malfunction
- Exhaust leaks that affect readings
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's drivable but should be fixed soon as it may affect emissions or lead to more severe issues.
Can this code come back after clearing it?
Yes, if the underlying issue isn't resolved, it will trigger again.
Why does this code pair with other exhaust temperature codes?
They may all relate to issues affecting the exhaust temperature monitoring system.
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