AutoCodes – Toyota – P1552 Toyota

P1552 Toyota Code - Battery Current Sensor Circuit High Input

Quick Answer

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. Common causes include Faulty Battery Current Sensor (Built into the Generator Control ECU Assembly), Battery Current Sensor harness is open or shorted, Battery Current Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1552 Toyota indicates Battery Current Sensor Circuit High Input.
Common causes: Common causes include Faulty Battery Current Sensor (Built into the Generator Control ECU Assembly), Battery Current Sensor harness is open or shorted, Battery Current Sensor circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 7,289

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 06, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1552 Toyota Description

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 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 this signal. The Diagnostic Trouble Code (DTC) will be set when the battery current sensor output value is abnormally high for 30 seconds or more with the ignition switch ON.

OBDII Code P1552 Toyota - Battery Current Sensor Circuit High Input - AutoCodes.com — P1552 Toyota Code - Battery Current Sensor Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P1552 Toyota?

Faulty Battery Current Sensor (Built into the Generator Control ECU Assembly)
Battery Current Sensor harness is open or shorted
Battery Current Sensor circuit poor electrical connection

How to Fix the DTC P1552 Toyota?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1552 Toyota code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1552 Toyota code?

Need more information on how to fix the P1552 Toyota code? Get Access to Factory Service Manuals

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Information for Specific Toyota Models

P1552 2013 Toyota RAV4 — Battery Current Sensor Circuit High Input
P1552 2014 Toyota RAV4 — Battery Current Sensor Circuit High Input
P1552 2015 Toyota RAV4 — Battery Current Sensor Circuit High Input
P1552 2016 Toyota RAV4 — Battery Current Sensor Circuit High Input
P1552 2017 Toyota RAV4 — Battery Current Sensor Circuit High Input
P1552 2018 Toyota RAV4 — Battery Current Sensor Circuit High Input

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.