Diagnostic Aid

WARNING: This page is about a different car, the 2018 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.

The following diagnostics are run in sequence while the vehicle is in decel cut-off:

HO2S Bank 1 Sensor 2: P2270, P013E, P013A, P2271.
HO2S Bank 2 Sensor 2: P2272, P014A, P013C, P2273.
At the same time, after P2270 and P2272 run and pass, diagnostics for P015A and P015C are also running. Any accelerator input will stop the tests, causing the sequence to start over.

After the above tests run and pass, the following diagnostics are run in sequence and are not affected by accelerator pedal input:

HO2S Bank 1 Sensor 2: P013F, P013B.
HO2S Bank 2 Sensor 2: P014B, P013D.
At the same time, diagnostics for P015B and P015D are also running.