What does code P1297 mean?

Q: What does code P1297 mean?

ELD Circuit Low Input. P1297 on Nissan vehicles indicates that the Engine Control Module (ECM) has detected a low input voltage on the Electrical Load Detection (ELD) circuit, which monitors the current draw from the alternator. The ECM uses this signal to adjust engine idle speed and charging system operation, and a low input means the signal voltage is below the expected threshold, often due to a faulty ELD sensor or wiring issue.

DTC codes / Nissan codes / P1297

P1297 · NissanELD Circuit Low Input

P1297 on Nissan vehicles indicates that the Engine Control Module (ECM) has detected a low input voltage on the Electrical Load Detection (ELD) circuit, which monitors the current draw from the alternator. The ECM uses this signal to adjust engine idle speed and charging system operation, and a low input means the signal voltage is below the expected threshold, often due to a faulty ELD sensor or wiring issue.

SystemPowertrain

Code typeNissan specific

SeverityLow

Fix difficultyIntermediate

AreaFuel and air metering (injector circuits)

Guidance is general and written for Nissan vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.