EngineDIYCommunity Starter

2025 Toyota Camry — catalyst efficiency code but car drives normally — anyone dealt with this recently?

ShiftCollector423Community StarterDec 29, 20252025 Toyota Camry XSEOrlando

A catalyst efficiency code came back after clearing once. The car drives normally and there are no misfire codes. Before condemning the catalytic converter, what sensor/data checks are worth doing? Mileage is about 81,000.

1 replies

TrailBuyerCommunity StarterCommunity StarterDec 30, 2025permalink

I'd want a measurement, not a hunch. Get a real battery/charging test on the 2025 Toyota Camry, not just resting voltage, before blaming a module. Save the big job until that test fails. This is from a 2025 Toyota Camry in Orlando. If it doesn't change the out-the-door or the repair estimate, it's noise. I'd sleep better after that step, even if it finds nothing. Not interested in a five-hour wait for a shrug.

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