Trouble Codes P0031 and P0051 - help

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12-05-16, 03:10 PM

okiegx

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Trouble Codes P0031 and P0051 - help

My 2004 is showing P0031 and P0051, both of which are H02S Heater control circuit low - I'm guessing it's bad fuse, or relay, but can't figure out which relay or fuse it is... any help?

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12-05-16, 05:28 PM

tz693

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It is your O2 sensor(s) went bad.

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12-05-16, 05:31 PM

okiegx

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You think both would be bad?

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12-06-16, 04:35 PM

tz693

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Possible. Replace one and read the code again.

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