Reseting the On-Board Diagnostics System (Cars Computer)


Asked by donloeffler Sep 30, 2007 at 09:10 AM about the 2004 Chevrolet Impala Base

Question type: Maintenance & Repair

My car was operating perfectly until I disconnected a connector near the oil flter (believe the wire to the connector comes from the manifold) so that I could replace the oil filter.  I drove with the wire off for over 50 miles and the Check Engine Light came on.  My Question is:  Can I reset the On-Board-Diagnostics System (Computer) to distinguish the Check Engine Light, assuming  there is no other problem.  Also, what must I do to reset this System (computer) and will it harm or cause other problems with the car.  Also, when I reset the system what must I do to return the car to normal.

1 Answer


If you reconnected the connector, the system will reset itself given about 100-150 miles of driving with the connector in place and working. You can get Advance Auto parts to reset your computer for free, or you can have it done at a dealership. It should cause no other problems, however, if the problem was NOT your disconnected connector, the light will come back on if the root cause is not fixed.

3 out of 3 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Chevrolet Impala Questions

Chevrolet Impala Experts

#1 Danny Wang
Danny Wang
Reputation 1,300
#2 Tom Demyan
Tom Demyan
Reputation 1,050
#3 FordNut
Reputation 1,020
View All

Related Models For Sale

Used Chevrolet Malibu"
1,120 Great Deals out of 56,361 listings starting at $1,400
Used Honda Accord"
934 Great Deals out of 74,550 listings starting at $1,295
Used Nissan Maxima"
393 Great Deals out of 23,623 listings starting at $1,500
Used Nissan Altima"
1,147 Great Deals out of 82,472 listings starting at $950
Used Chevrolet Tahoe"
827 Great Deals out of 32,432 listings starting at $175
Used Toyota Camry"
1,214 Great Deals out of 85,516 listings starting at $999
Used Chrysler 300"
472 Great Deals out of 22,370 listings starting at $2,500
Used Ford Mustang"
645 Great Deals out of 42,614 listings starting at $1,695
Used Ford Fusion"
1,078 Great Deals out of 70,659 listings starting at $1,950
Used Buick LaCrosse"
423 Great Deals out of 17,149 listings starting at $2,450
Used Ford Taurus"
363 Great Deals out of 21,420 listings starting at $1,750
Used Chevrolet Monte Carlo"
46 Great Deals out of 2,062 listings starting at $800

Used Cars For Sale

2015 Chevrolet Impala For Sale
458 Great Deals out of 17,343 listings starting at $11,990
2014 Chevrolet Impala For Sale
530 Great Deals out of 6,648 listings starting at $9,995
2013 Chevrolet Impala For Sale
78 Great Deals out of 2,496 listings starting at $5,895
2012 Chevrolet Impala For Sale
102 Great Deals out of 2,194 listings starting at $5,995