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1997 Ford F-150 Lariat 4.6L MIL Lamp on
Posted to Ford Driveability on 3/13/2006 11 Replies

came in with codes p0420 & p0430 no action on scan tool for either rear sensor (flat line) both have 12 volts coming to them. so i replaced both sensors and still no response. what am i overlooking here? i'm covered up with work so probably something staring b...

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  Related Documents & Media  1997 Ford F-150 Lariat

 
Message Closed w/FIX

car Vehicle Data

1997 Ford F-150 Lariat

VIN 1FTDX18W3V
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)
P0430Catalyst Efficiency Below Threshold (Bank 2)
Message Closed w/FIX

car Vehicle Data

1997 Ford F-150 Lariat

VIN 1FTDX18W3V
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)
P0430Catalyst Efficiency Below Threshold (Bank 2)