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 short to battery on the ECM relay ground signal.
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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P0687-00 |
(ECM/PCM Power Relay Control Circuit High) |
Diagnosis condition |
Ignition switch is turned ON or engine is running |
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Signal (terminal) |
(-) |
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Threshold |
Power supply to a device is > 16V |
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Diagnosis delay time |
Diagnostic runs continuously when the engine is running |
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