Believe the eng CO2 sensor light comes on every 60,000 miles. Solution is to take to dealer & have them reset the computer for a small fee of $ 100.00 to $ 150.00. Takes less than 5 minutes to do. Is there a cheaper way to reset computer without damaging something else in emission system.
Cheapest way to reset Eng O2 sensor without taking to dealer on 1995 Isuzu Pickup
by akaal in Mesa, AZ on May 17, 2011
ANSWER by mastertech6371 , May 17, 2011
At 90,000 mile intervals, the O2 sensor lamp will illuminate. After replacing the sensor, perform the following procedure to reset the lamp. Remove instrument cluster. Remove masking tape from hole B . Remove screw from hole A and install into hole B . Apply new masking tape to hole B . Install instrument cluster. NOTE: This procedure assumes that the sensor is being replaced for the first time (at 90,000 miles). For subsequent procedures (every 90,000 miles) the procedure will be reversed. this is the procedure if you want to try it yourself. Roy