Review on Denso 234-9123 Oxygen Sensor: Reliable Air and Fuel Ratio Monitoring Device by Christopher Karamba
[FAULT, LOW, DEFECTIVE] Trigger Code P0420. Again
We replaced both the 02 sensors and catalytic converter in our 2008 Subaru Outback in March 2019. Summer. In December 2019 we received code P0420 again. When they got him to read the code he said the oxygen sensor is left bank 1. For 100.00 I definitely hope to get more than 9 months. We'll try to fix more bugs, this isn't our first rodeo with this code. However, I advise against buying it. Yes, it's $50 cheaper elsewhere, but it's an OEM part and shouldn't behave as such.
- High marks for support and durability from testers
- Not sure
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