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Error messages

1K views 2 replies 2 participants last post by  KEITHM 
#1 ·
Hi recently got poo31 and p0037 error messages of EML coming on. Have just changed the top oxygen sensor and reset the EML light driven a mile started car and he presto got both codes again.

Obviously would have expected the p0037 as bottom one not changes, but any ideas why still getting top sensor code error?

Thanksb
 
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