2004 Chevy Impala obdll code 301

2004 CHEVROLET IMPALA
190,100 MILES • 6 CYL • FWD • AUTOMATIC
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AZADI123
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  • 1 POST
my car give 301 code on obdll.
i did tunup chaning spark plug and wire still give that code. I also put injctor cleanerin car. and also change number 1&4 coil. when i turn off obdll and drive about 30 mile light comes on .
Dec 9, 2008 at 5:27 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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