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1997 Geo Metro 1.0L MIL Lamp on
Posted to GM Driveability on 10/20/2005 4 Replies

po420 cat eff. have 1.27v on scanner back probe pcm had 4.35v at yellow wire (02 sense) if pull terminal out of pcm volts comming from pcm. are there any flashes or what direction need to go? thanks for any help duane

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  Related Documents & Media  1997 Geo Metro

 
Message Closed w/FIX

car Vehicle Data

1997 Geo Metro

VIN 2C1MR2260V
Engine1.0 L / 3 cyl / GAS
Trans5-speed Standard
DeliveryFI / tbi
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

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

car Vehicle Data

1997 Geo Metro

VIN 2C1MR2260V
Engine1.0 L / 3 cyl / GAS
Trans5-speed Standard
DeliveryFI / tbi
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)