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 1,250
#2 Tom Demyan
Tom Demyan
Reputation 990
#3 littlehorn
Reputation 940
View All

Related Models For Sale

Used Chevrolet Malibu"
967 Great Deals out of 62,757 listings starting at $1,195
Used Honda Accord"
1,051 Great Deals out of 71,289 listings starting at $1,491
Used Nissan Maxima"
334 Great Deals out of 21,163 listings starting at $399
Used Nissan Altima"
1,030 Great Deals out of 72,707 listings starting at $400
Used Chrysler 300"
446 Great Deals out of 23,420 listings starting at $1,000
Used Toyota Camry"
1,244 Great Deals out of 78,101 listings starting at $1,450
Used Chevrolet Monte Carlo"
30 Great Deals out of 1,895 listings starting at $2,599
Used Ford Mustang"
687 Great Deals out of 37,653 listings starting at $1,800
Used Ford Fusion"
1,079 Great Deals out of 64,164 listings starting at $1,950
Used Chevrolet Tahoe"
561 Great Deals out of 30,235 listings starting at $1,900
Used Ford Taurus"
431 Great Deals out of 21,423 listings starting at $1,200
Used Buick LaCrosse"
349 Great Deals out of 16,233 listings starting at $1,966

Used Cars For Sale

2015 Chevrolet Impala For Sale
273 Great Deals out of 18,930 listings starting at $13,995
2014 Chevrolet Impala For Sale
437 Great Deals out of 7,428 listings starting at $10,692
2013 Chevrolet Impala For Sale
98 Great Deals out of 2,986 listings starting at $7,595
2012 Chevrolet Impala For Sale
110 Great Deals out of 2,258 listings starting at $3,900