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) has detected that the DEF supply pump assembly pump is stuck.
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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P204A |
DEF PUMP STATUS |
Diagnosis condition |
Immediately after turning the ignition ON and continues until DEF dosing unit attempts to prime |
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Signal (terminal) |
DEF dosing pump |
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Threshold |
DEF dosing unit was unable to maintain the commanded DEF pressure. |
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Diagnosis delay time |
- |
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