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.
After treatment outlet NOx sensor heater malfunction
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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P22A7-00 |
NOX SENSOR B1 SEN 2 |
Diagnosis condition |
This diagnostic runs when the SCR outlet temperature sensor has been above 200°C (392°F) for 5 seconds while the engine is running. |
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Signal (terminal) |
NOx sensor signal |
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Threshold |
The ECM detected the NOx sensor heater was unable to maintain its normal operating temperature. |
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Diagnosis delay time |
- |
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