LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2007 >> LS 460L >> Repair and Diagnosis >> External Pages >> Different car >> Section 781 (Engine Control System - DTCS P1225 To P2A03) >> P1551, P1552 Battery Current Sensor >> DTC Logic >> DTC Detection Logic
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Detection Logic

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If DTC P1551 or P1552 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to "DTC LOGIC ".
DTC DETECTION CONDITION CHART

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1551 Battery current sensor circuit low input An excessively low voltage from the sensor is sent to ECM.
  • Harness or connectors (The sensor circuit is open or shorted.)
  • Battery current sensor
P1552 Battery current sensor circuit high input An excessively high voltage from the sensor is sent to ECM.