× 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
1996 Chevrolet Blazer 4.3L Excessive Emissions, Poor Fuel Economy, MIL Lamp on
Posted to GM Driveability on 8/25/2004 3 Replies

came in with these codes p0153, p0154, p0155 low or slow, o2 sensor activity. also had 02 heater circuit. replaced bank 2 sensor with no change. I can't determine if its the ijector assmebly or the computer. fuel trim is at 128 on one side and 138 on bank 2. i...

3 Replies Received (View Replies)

  Related Documents & Media  1996 Chevrolet Blazer

 
Message Closed w/Summary

car Vehicle Data

1996 Chevrolet Blazer

VIN 1GNDT13WXT
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Fuel Economy, MIL Lamp On
OccursAlways

Trouble Codes

P0153Air Fuel Sensor (Bank 2 Sensor 1) Slow Response
P0154Air Fuel Sensor (Bank 2 Sensor 1) Heater Circuit Malfunction
P0155Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Circuit Malfunction
Message Closed w/Summary

car Vehicle Data

1996 Chevrolet Blazer

VIN 1GNDT13WXT
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Fuel Economy, MIL Lamp On
OccursAlways

Trouble Codes

P0153Air Fuel Sensor (Bank 2 Sensor 1) Slow Response
P0154Air Fuel Sensor (Bank 2 Sensor 1) Heater Circuit Malfunction
P0155Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Circuit Malfunction