AutoCodes – Infiniti – P1551 Infiniti

P1551 Infiniti 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, 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 Infiniti indicates Battery Current Sensor Circuit Low Input.
Common causes
Common causes include Faulty Battery Current Sensor, 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 7,172
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 29, 2019
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Code P1551 Infiniti 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 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. And ECM sends the calculated value as the power generation command value to IPDM E/R.
OBDII Code P1551 Infiniti - Battery Current Sensor Circuit Low Input - AutoCodes.com
P1551 Infiniti Code - Battery Current Sensor Circuit Low Input

What are the Possible Causes of the DTC P1551 Infiniti?

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

How to Fix the DTC P1551 Infiniti?

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 Infiniti 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 Infiniti code?

Need more information on how to fix the P1551 Infiniti code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1551 Infiniti code diagnosed by a professional: Find a repair shop in your area

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 Infiniti Code

1. What are the common symptoms associated with OBDII code P1551 in an Infiniti?

- Common symptoms include illuminated check engine light, decreased fuel efficiency, and potential issues with the vehicle's battery and charging system.

2. What does the OBDII code P1551 in an Infiniti indicate?

- The code P1551 indicates a low input signal from the battery current sensor circuit in the vehicle.

3. What are the possible causes of OBDII code P1551 in an Infiniti?

- Possible causes include a faulty battery current sensor, damaged wiring or connectors in the sensor circuit, or issues with the vehicle's battery or charging system.

4. How can I diagnose the root cause of OBDII code P1551 in my Infiniti?

- To diagnose the issue, it is recommended to perform a thorough inspection of the battery current sensor, check the wiring and connectors for any damage, and test the vehicle's battery and charging system.

5. Can I continue driving my Infiniti with OBDII code P1551 present?

- It is not recommended to drive the vehicle with the code P1551 present, as it can lead to potential issues with the battery and charging system, affecting the overall performance of the vehicle.

6. How can I repair OBDII code P1551 in my Infiniti?

- Repairing the code P1551 involves replacing the faulty battery current sensor, repairing or replacing damaged wiring or connectors, and ensuring the proper functioning of the vehicle's battery and charging system.

7. Will resetting the OBDII code P1551 make it go away permanently?

- Resetting the code may temporarily turn off the check engine light, but if the underlying issue is not addressed, the code is likely to reappear. It is important to diagnose and repair the root cause of the code.

8. Are there any DIY tips for addressing OBDII code P1551 in an Infiniti?

- While some basic troubleshooting steps can be taken, such as checking for loose connections or damaged wiring, it is recommended to seek professional help for a thorough diagnosis and repair of the issue.

9. How much does it typically cost to repair OBDII code P1551 in an Infiniti?

- The cost of repairing OBDII code P1551 can vary depending on the extent of the issue and the specific repairs needed. It is advisable to consult a mechanic for a proper diagnosis and cost estimate.

10. Can OBDII code P1551 cause further damage to my Infiniti if left unresolved?

- Leaving OBDII code P1551 unresolved can potentially cause further damage to the vehicle's battery and charging system, leading to more serious issues over time. It is best to address the code promptly to prevent any additional damage.

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