What it means
The exhaust gas temperature sensor on bank 1 sensor 6 reports a circuit range/performance fault. EGT measurement at this position is unreliable.
At a glance
- Usually lights the check-engine light
- Affects emissions; the car can fail an emissions test
How it works
Bank 1 sensor 6 measures exhaust temperature at a specific point on the cylinder 1 bank. The control module checks whether its reading changes within a plausible range as exhaust conditions change. This code sets when the sensor signal is electrically present but does not track expected temperature behavior, which can result from an aged sensor or a wiring fault.
Common causes
Most likely first.
- Temperature sensor failed
- Wiring or connector fault
- Sensor element aged beyond calibration window
Symptoms
- Check-engine light may be on
- Reduced engine performance
- Increased emissions or failed emissions test
How to diagnose it
- Save freeze-frame data and review bank 1 sensor 6 live temperature during warm-up and changing engine load for a reading that responds too slowly or implausibly.
- Confirm the sensor location from service information and inspect its connector and harness for heat damage, corrosion, or loose terminals.
- Compare bank 1 sensor 6 with other available exhaust temperature readings under similar conditions, allowing for their different locations.
- Test the sensor response and wiring for continuity or intermittent connection according to the manufacturer's procedure.
- Repair wiring faults or replace bank 1 sensor 6 if its response falls outside the manufacturer's specification.
Common fixes
- Clean and secure the bank 1 sensor 6 connector.
- Repair damaged or intermittent wiring at the sensor.
- Replace the bank 1 sensor 6 element if it has aged outside its calibration range or fails testing.
Can I keep driving?
The engine may limit performance or emissions control if it cannot trust the bank 1 sensor 6 temperature trend. Keep trips short and avoid heavy loads until the sensor response is checked.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.