CEL - 12B304 - Lambda probe eating after catalyst activation : Line Break |
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05-18-2021, 06:45 PM | #1 |
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CEL - 12B304 - Lambda probe eating after catalyst activation : Line Break
CEL - 12B304 - Lambda probe heating after catalyst activation : Line Break
Got this code recently. Running a Bootmod3 with a custom tune - downgraded to OEM tune just to be sure. Reset codes, it comes back very fast now, as soon as the car is powered on (or powered on when warm at least). It seems related to an O2 sensor, which might have broken. Does the « after catalyst » in the code mean that it is the post-cat o2 sensor I need to fix? Thanks! |
05-19-2021, 02:49 PM | #3 |
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Check the connection for the downstream o2 sensor, the one after the catalyst, I would follow the cable up and make sure its not disconnected. If everything is connected correctly you'll need to replace it.
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