0430
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Cat Codes and Tough O2 Sensor
Recently, I reduced my E content I was using on my GH AO 93 tune to cover for bad winter gas, down to 15-19, and I received a CEL for 0420 and 0430, cat efficiency below threshold. Seeing as it was both banks simultaneously, and right when it's warming up and lowering ethanol levels, and I'm at...- WarrenBoostit
- Thread
- 0420 0430 gearhead gearheadtune
- Replies: 4
- Forum: Generation 4 - Maintenance & Troubleshooting
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