crwdns2934241:0crwdne2934241:0 Alex Garcia

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Replace Catalytic converter and P0420 still there

crwdns2934249:0crwdne2934249:0:

Hello there.

I own a 07 Lexus IS 250 AWD with 90k miles that replaced both bank 1 O2 sensors and also new cat converter but the ecm P0420 came back at 30 miles after driving.

I try this: 1. I disconnect the air fuel sensor before cat and drove the car and just  one code came up P0051 (Why just this one and not the P0420)

# Short term fuel trim on bank 1 is -2.3%
# And long term fuel trim read -23.4%

I will appreciate all your help…

crwdns2866306:0crwdne2866306:0:

Lexus IS

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open