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 Engine Control Module (ECM) detected a mismatch between the aftertreatment intake and outlet NOx sensor readings.
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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P1C56-00 |
NOx Sensor Bank 1 Sensor 2 Sensor Circuit Intermittent/Erratic (Aftertreatment 1 outlet NOx sensor - data erratic, intermittent, or incorrect) |
Diagnosis condition |
Continuously while the Selective Catalytic Reduction (SCR) system is dosing diesel exhaust fluid into the aftertreatment system |
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Signal (terminal) |
- |
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Threshold |
- |
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Diagnosis delay time |
Diagnostic runs continuously when the engine is running |
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