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 the Selective Catalyst Reduction (SCR) control unit reporting DEF Tank Heater current is below an allowable limit.
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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P202B |
DEF TANK HEATER |
Diagnosis condition |
Diesel Exhaust Fluid Tank Heater is active. |
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Signal (terminal) |
Voltage signal transmitted to DEF tank heater |
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Threshold |
Tank heater current < 5 Amperes |
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Diagnosis delay time |
Diagnostic runs continuously when the DEF tank heating is being commanded. |
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