DTC Detection Logic
WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.
The ECM detected an intermittent battery voltage supply to the DPF temperature sensor module resulting in an internal reset of the module.
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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P1623-00 |
DPF Temperature Sensor Module Circuit (Aftertreatment DPF temperature sensor module - Root cause not known) |
Diagnosis condition |
Continuously when key is ON, or engine is running |
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Signal (terminal) |
battery supply voltage (3) |
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Threshold |
The number of DPF temperature sensor module reset events within a 300 second window is ≥ 5 counts |
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Diagnosis delay time |
Diagnostic runs continuously when the engine is running |
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