2000 Buick LeSabre Custom 3.8L P0420
vehicle originally came with no power and check engine light on. replaced catalytic converter because it was plugged. replaced o2 sensors because slow reaction, ran on the rich side. returned a couple times for dieing problem replaced crank sensor. came back a...
FIX posted 3/13/2008
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Message Closed w/FIX
Vehicle Data2000 Buick LeSabre Custom
Trouble Codes
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Message Closed w/FIX
Vehicle Data
2000 Buick LeSabre Custom
VIN | 1G4HR54KIY |
Engine | 3.8 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | P0420 |
Trouble Codes
P0420 | Catalyst Efficiency Below Threshold (Bank 1) |