Exhaust Gas Temperature Sensor Circuit Intermittent (Bank 2 Sensor 2)
Common Symptoms
- Check Engine Light illuminated
- Poor fuel economy
- Reduced engine performance under load
- Increased exhaust emissions
- Diesel particulate filter regeneration issues (diesel vehicles)
- Exhaust system warning light on (if equipped)
Most Likely Root Causes
- Damaged or corroded exhaust gas temperature sensor wiring
- Loose or intermittent sensor connector
- Failed exhaust gas temperature sensor
- Corroded sensor connector pins due to heat and moisture exposure
- Chafed wiring harness near exhaust components
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Component Location
The Bank 2 Sensor 2 exhaust gas temperature sensor is located in the exhaust system downstream of the catalytic converter on the side opposite cylinder one.
Manufacturer Notes
Exhaust gas temperature sensors in this location are highly susceptible to heat cycling and moisture intrusion causing intermittent electrical connections.
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