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Home >> Toyota >> 2016 >> Corolla S, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 28 (Charging System (2ZR-FAE) - Diagnostic Codes & Symptom Tests (Model Code: ZRE172)) >> Charging System >> DTC P1550-P1552; Battery Current Sensor Circuit [08/2013 - ] >> Description

DTC P1550-P1552; Battery Current Sensor Circuit [08/2013 - ]: Description

WARNING: This page is about a different variant/trim than selected.

The battery current sensor built into the generator control ECU assembly detects the amount of charge/discharge current. The generator control ECU assembly sends voltage generation instructions to the generator assembly based on these signals.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P1550 Battery Current Sensor Circuit Difference between the maximum and minimum current values of the battery current sensor is less than 1 A for 10 seconds or more with the ignition switch ON
(1 trip detection logic)
  • Generator control ECU assembly
  • Wire harness or connector
Does not come on DTC stored
P1551 Battery Current Sensor Circuit Low Battery current sensor output value is abnormally low for 30 seconds or more with the ignition switch ON
(1 trip detection logic)
  • Generator control ECU assembly
  • Wire harness or connector
Does not come on DTC stored
P1552 Battery Current Sensor Circuit High Battery current sensor output value is abnormally high for 30 seconds or more with the ignition switch ON
(1 trip detection logic)
  • Generator control ECU assembly
  • Wire harness or connector
Does not come on DTC stored