P0041moderate severityPowertrain
O2 Sensor Signals Swapped Bank 1 Sensor 2 / Bank 2 Sensor 2
on 2000-2005 Mitsubishi Eclipse 2.4L I4 · FWD
What this code means
The downstream O2 sensor signals for Bank 1 and Bank 2 appear to be swapped.
Symptoms
- Check Engine Light
- Incorrect catalyst monitoring
- Failed emissions
Common causes
- Sensor connectors swapped
- Wiring crossed after service
Diagnostic steps
- Verify downstream sensor connections
- Trace wiring to PCM
Repair notes
Correct the sensor connector routing.
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P0010
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P0014
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P0015
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