× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
1999 Dodge Dakota 3.9L MIL Lamp on
Posted to Chrysler Driveability on 12/3/2013 16 Replies

This Dakota has had the convertor replaced twice due to a P0420 code that resets after about 3000mi. Upstream and downstream sensors are switching at same rate. Upstream sensor does not seem "lazy". Both sensors react to richening/leaning system. They do not l...

16 Replies Received (View Replies)

  Related Documents & Media  1999 Dodge Dakota

 
Message Closed w/FIX

car Vehicle Data

1999 Dodge Dakota

VIN 1B7FL26X5X
Engine3.9 L / 6 cyl / GAS
Trans5-speed Standard
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On

Trouble Codes

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

car Vehicle Data

1999 Dodge Dakota

VIN 1B7FL26X5X
Engine3.9 L / 6 cyl / GAS
Trans5-speed Standard
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)