My check engine light came on and the code reading is PO455.

PAULINEHILL

2007 CHEVROLET IMPALA

It started out with a bad gas cap. Went to auto zone and they sold me the wrong cap that wasnt pressurized. I drove for 3 weeks like that. Put the right cap on and my code hasnt reset and now it states tha its gross evaporitive system leak.

1 Reply

ASEMASTER6371

EXPERT
25,505 POSTS

Most likely the gas cap was not the issue. You need a shop with a scan tool, smoke machine and voltmeter to determine the failure and tell you the exact failure.

Roy

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My check engine light came on and the code reading is PO455.

It started out with a bad gas cap. Went to auto zone and they sold me the wrong cap that wasnt pressurized. I drove for 3 weeks like that. Put the right cap on and my code hasnt reset and now it states tha its gross evaporitive system leak.

1 Reply

Most likely the gas cap was not the issue. You need a shop with a scan tool, smoke machine and voltmeter to determine the failure and tell you the exact failure.

Roy

Please login or register to post a reply.

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My check engine light came on and the code reading is PO455.

It started out with a bad gas cap. Went to auto zone and they sold me the wrong cap that wasnt pressurized. I drove for 3 weeks like that. Put the right cap on and my code hasnt reset and now it states tha its gross evaporitive system leak.

1 Reply

Most likely the gas cap was not the issue. You need a shop with a scan tool, smoke machine and voltmeter to determine the failure and tell you the exact failure. Roy

Please login or register to post a reply.

Related Check Engine Light Content

2007 Chevrolet Impala Check Engine Light Says On

Check Engine Light

Bell Starts Ringing. Oil Pressure Low. Turn Off Engine...

Help!!!

Not Changing Oil On The Regular

Recommended Guides

Most likely the gas cap was not the issue. You need a shop with a scan tool, smoke machine and voltmeter to determine the failure and tell you the exact failure.

Roy