Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 1 Sensor 2)
Common Symptoms
- Check engine light illuminated
- Reduced engine power or derate mode
- Poor fuel economy
- Increased diesel exhaust emissions
- DPF regeneration issues or frequent regens
Most Likely Root Causes
- Failed exhaust gas temperature sensor
- Damaged or corroded sensor wiring harness
- Exhaust leaks near sensor location
- Carbon buildup on sensor element
- ECM software calibration issue
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Component Location
The exhaust gas temperature sensor is located downstream of the diesel oxidation catalyst or turbocharger on bank 1 of the exhaust system.
Manufacturer Notes
Exhaust gas temperature sensors on diesel aftertreatment systems are critical for DPF regeneration control and emissions compliance.
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