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Need help: LH2.4 check engine light and error codes 200

The first thing to do is to post the actual codes in a new post. The second is to understand that compensating rich/lean code(s) - typically 231, 221 are secondary and a response to the O2 sensor being on its extreme range (rich/lean) of being able to compensate. So, look at the primary code(s) first. I have the green book on the LH 2.4 system and it has a trouble shooting procedure for each code. I'll try to check back this evening to see what you posted.






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