AutoCodes – Toyota – P1551 2013 Toyota RAV4

P1551 2013 Toyota RAV4 Code - Battery Current Sensor Circuit Low 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: P1551 2013 Toyota RAV4 indicates Battery Current Sensor Circuit Low 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 392

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1551 2013 Toyota RAV4 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 Reassembly 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 low for 30 seconds or more with the ignition switch ON.

OBDII Code P1551 2013 Toyota RAV4 - Battery Current Sensor Circuit Low Input - AutoCodes.com — P1551 2013 Toyota RAV4 Code - Battery Current Sensor Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P1551 2013 Toyota RAV4?

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 P1551 2013 Toyota RAV4?

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 P1551 2013 Toyota RAV4 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 P1551 2013 Toyota RAV4 code?

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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.

Frequently Asked Questions about P1551 2013 Toyota RAV4 Code

What does the OBDII code P1551 mean for a 2013 Toyota RAV4?

The code P1551 indicates a "Battery Current Sensor Circuit Low Input," meaning the vehicle's ECU has detected an issue with the signal from the battery current sensor.

What are the common symptoms of code P1551 in a 2013 Toyota RAV4?

Symptoms may include a check engine light, reduced charging system performance, difficulty starting the vehicle, or irregular voltage readings.

What causes the P1551 code to appear?

Common causes include a faulty battery current sensor, damaged or corroded wiring, loose electrical connections, or an issue with the vehicle's ECU.

Can a dead battery trigger code P1551?

A dead or weak battery is not a direct cause, but it can lead to low voltage conditions that may contribute to triggering this code.

How do you diagnose the P1551 code?

Diagnosis involves checking the battery current sensor, inspecting the wiring and connectors for damage or corrosion, and testing the voltage signal from the sensor to the ECU.

Can I still drive my 2013 Toyota RAV4 with a P1551 code?

While the vehicle may still be drivable, ignoring the code could lead to issues with the charging system, affecting battery health and overall performance.

How do you fix the P1551 code on a 2013 Toyota RAV4?

Repairs may include replacing the battery current sensor, repairing or replacing damaged wiring, cleaning corroded connections, or updating the ECU if needed.

Is the P1551 code related to the alternator?

The code is not directly related to the alternator, but a malfunctioning battery current sensor can affect how the alternator charges the battery.

How much does it cost to fix the P1551 code?

Repair costs vary but can range from $100 to $300 for sensor replacement or wiring repairs, depending on labor rates and parts pricing.

Can a DIYer fix the P1551 code on a 2013 Toyota RAV4?

Yes, if you have basic automotive knowledge, you can inspect the wiring and replace the battery current sensor. However, advanced diagnostics may require professional tools.