2004 Chevy Impala obdll code 301

2004 CHEVROLET IMPALA
190,100 MILES • 6 CYL • FWD • AUTOMATIC
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AZADI123
  • MEMBER
  • 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
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JNOVACK
  • CERTIFIED EXPERT
  • 723 POSTS
please double check plug wires are still in good shape also check the camshaft and crankshaft sensors also the knock sensor
Dec 9, 2008 at 6:24 PM