Some Customers may comment that their vehicle’s Malfunction Indicator Lamp (MIL) is illuminated. Upon initial diagnosis, technicians may find one or more of the following fuel trim and/or O2 sensor related DTCs set: P0101, P0137, P0138, P0140, P0141, P0157, P0158, P0160, P0161, P0171, P0174, P0420, P0430, P1174, P1175, P2096, P2097, P2098, P2099, P2177, P2178, P2179, P2180, P2187, P2188, P2189, P2190, P2270, P2271, P2272 or P2273.
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