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My check engine light came on today and said service emissions system, it gave me the code PC0139 Current. Can someone tell me what this code is? Thanks James
Originally Posted by feef706 My check engine light came on today and said service emissions system, it gave me the code PC0139 Current. Can someone tell me what this code is? Thanks James Pre converter O2 sensor slow response. Likely need to replace the O2 sensor that is immediately ahead of the cat.
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