DTC Detection Logic
WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
To judge the malfunction, the A/F signal computed by ECM from the A/F sensor 1 signal is monitored not it will shift to LEAN side or RICH side.
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DTC No. |
Trouble diagnosis name (Trouble diagnosis content) |
DTC detecting condition |
Possible Cause |
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P2097 |
POST CAT FUEL TRIM SYS B1 (Post catalyst fuel trim system too rich bank 1) |
The output voltage computed by ECM from the A/F sensor 1 signal is shifts to the rich side for a specified period. |
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