P1551 Toyota OBD-II Trouble Code

P1551 Toyota-Battery Current Sensor Circuit Low Input

Fault code P1551 Toyota Battery current sensor circuit low input.This sensor installed at the negative terminal of the battery cable.The battery current sensor measures the charging/ discharging current of the battery.

Based on battery current sensor signal engine control module determine whether or not the power generation voltage variable is executed.When executing the power generation voltage variable control ,engine control module calculates the target power generation voltage based on battery current sensor signal.

Cause Of P1551 Battery Current Sensor Circuit Low Input

1.Fault in Battery current sensor.

2.Battery current sensor harness shorted or open.

3.Poor electrical connection of battery current sensor circuit.

P1551 Toyota Fault Code Symptoms

Engine check light iluminates or MIL ON.

How To Fix

Check for possible cause given above.Inspect wiring ,harness and connector of battery current sensor.Inspect battery current sensor repair or replace error detected part.

P1552 Toyota-Battery Current Sensor Circuit High Input

Fault code P1552 Toyota battery current sensor circuit high input.This sensor installed at the positive terminal of the battery cable.The battery current sensor measures the charging/discharging current of the battery.

Based on battery current sensor signal ECM module determine whether or not the power generation voltage variable is executed.When executing the power generation voltage variable control,ECM module calculate the target power generation voltage based on battery current sensor signal.

Cause Of P1552 Battery Current Sensor Circuit High Input

1.Fault in Battery current sensor.

2.Battery current sensor harness shorted or harness open.

3.Battery sensor circuit poor electrical connection.

P1552 Toyota Symptoms

Malfunction indicator light illuminates or engine check light ON.

How To Fix

Check possible causes given above. Inspect wiring and connector of battery current sensor. Inspect the sensor replace or repair error detected part.

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