Engine-Codes - Toyota - P1551 TOYOTA

P1551 TOYOTA - Battery Current Sensor Circuit Low Input

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P1551 TOYOTA Possible Causes

  • Faulty Battery Current Sensor
  • Battery Current Sensor harness is open or shorted
  • Battery Current Sensor circuit poor electrical connection

How do I fix code P1551 TOYOTA?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Cost of diagnosing the P1551 TOYOTA code

Labor: 1.0

The cost of diagnosing the P1551 TOYOTA code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1551 TOYOTA Meaning

The power generation voltage variable control enables fuel consumption to be decreased by reducing the engine load which is caused by the power generation of the generator. The battery current sensor is installed to the battery cable at the negative terminal. The sensor measures the charging/discharging current of the battery. Based on the sensor signal, Engine Control Module (ECM) judges whether or not the power generation voltage variable control is performed. When performing the power generation voltage variable control, ECM calculates the target power generation voltage based on the sensor signal.

P1551 TOYOTA More Information

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