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1996 Chevrolet IMPALA SS 5.7L MIL Lamp on
Posted to GM Driveability on 3/12/2000

I recently purchased this car and it was involved in a wreck.I drove it for a couple of weeks when the MIL light came on. I got my hands on an OTC 4000E scanner and hooked it up and pulled up the previous codes although I don't know if the descriptions are...

 
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car Vehicle Data

1996 Chevrolet IMPALA SS

VIN 1G1B152P0T
Engine5.7 L / 8 cyl
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0410AIR System Oxygen Sensor Monitor
P0420Catalyst Efficiency Below Threshold (Bank 1)
Message Closed

car Vehicle Data

1996 Chevrolet IMPALA SS

VIN 1G1B152P0T
Engine5.7 L / 8 cyl
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0410AIR System Oxygen Sensor Monitor
P0420Catalyst Efficiency Below Threshold (Bank 1)