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 the engine speed was 50 RPM below governed idle speed for 30 seconds.
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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P0506-00 |
ISC SYSTEM (Idle Air Control System RPM Lower Than Expected) |
Diagnosis condition |
Engine running at idle. |
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Signal (terminal) |
(-) |
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Threshold |
Idle reference speed - Engine speed > 50 RPM, when the amount of time that engine speed is outside the idle reference speed band, by more than 50 RPM, is equal to 15 seconds |
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Diagnosis delay time |
Diagnostic runs continuously when the engine is running |
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