Diagnostic Aids

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.

This diagnostic procedure can be used to diagnose these common DTCs: U0400, U0401, U0402, U0403, U0404, U0405, U0406, U0407, U0408, U0409, U040D, U040F, U0410, U0414, U0415, U0416, U0417, U0418, U041B, U041E, U0420, U0421, U0422, U0423, U0424, U0425, U0426, U0427, U0428, U0429, U042B, U042E, U0430, U0431, U0432, U0433, U0435, U0436, U0437, U0438, U0439, U043A, U043B, U043C, U0440, U0447, U0452, U0456, U0459, U045A, U0461, U0462, U0463, U0464, U0465, U0466, U0467, U0468, U0469, U046A, U046B, U046C, U046D, U0481, U0482, U0483, U0485, U0486, U0492, U0493, U0497, U0498, U0499, U04B1, U04B5, U0507, U0508, U0513, U0514, U0515, U052A, U0532, U0533, U0534, U0536, U0537, U053B, U053C, U053D, U0546, U0549, U054B, U0551, U0555, U0558, U0563, U0564, U0565, U056B, U056E, U0585, U0586, U0588, U0594, U0595, U0596, U059B, U05A1, U05A2, and other DTCs within U0400 - U05FF range.