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2001 Chevrolet S10 2.2L MIL Lamp on
Posted to GM Driveability on 5/21/2008 9 Replies

This truck came in with new plugs and wires, new O2 sensors, converter. Code. PO 420 converter efficiency. The truck runs and idles great, the front 02 looks good on the scope, the rear O2 stays below one volt and has intermittent spikes. I have never seen a r...

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  Related Documents & Media  2001 Chevrolet S10

 
Message Closed w/Summary

car Vehicle Data

2001 Chevrolet S10

VIN 1GCCS19501
Engine2.2 L / 4 cyl / FLEX
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursEvery 2 Weeks

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)
Message Closed w/Summary

car Vehicle Data

2001 Chevrolet S10

VIN 1GCCS19501
Engine2.2 L / 4 cyl / FLEX
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursEvery 2 Weeks

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)