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04 Civic 1.7 L engine. Cannot read the OBD check engine light

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Old Jun 14, 2021
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04 Civic 1.7 L engine. Cannot read the OBD check engine light
The check engine light is on so I went to Advance auto parts and Auto Zone. Techs plugged the reader and it cannot read the error. It’s just keep spinning forever. I read there may be a blown fuse. Everything works in the car.
Where is the fuse of the OBD? Any other stuff I need to look for
Thanks in Advance
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Old Jun 15, 2021
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Re: 04 Civic 1.7 L engine. Cannot read the OBD check engine light
Fuse 9 (10 amp) in the under-dash box is for the data link connector. If it were blown you notice other issues though. Does the temperature and fuel gauges in the cluster work?
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Old Jun 15, 2021
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Re: 04 Civic 1.7 L engine. Cannot read the OBD check engine light
Originally Posted by BrotatoChip
Fuse 9 (10 amp) in the under-dash box is for the data link connector. If it were blown you notice other issues though. Does the temperature and fuel gauges in the cluster work?
Both Temperature and fuel gauges work or to be honest the needle moves. I’ll replace the fuse anyway and see
what else could be the reason ?
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Old Jun 15, 2021
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Re: 04 Civic 1.7 L engine. Cannot read the OBD check engine light
Originally Posted by tott2692002
what else could be the reason ?
Your ECU.
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Old Jun 15, 2021
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Re: 04 Civic 1.7 L engine. Cannot read the OBD check engine light
Check for loose bolts on the alternator
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