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P1651 Infiniti Code - Starter Motor Relay

Quick Answer

The P1651 Infiniti code refers to an issue with the starter motor relay in the vehicle. Common causes include Faulty starter motor relay, Damaged wiring in the relay 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
P1651 Infiniti indicates Starter Motor Relay.
Common causes
Common causes include Faulty starter motor relay, Damaged wiring in the relay 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1651 Infiniti Description

The P1651 Infiniti code refers to an issue with the starter motor relay in the vehicle. The starter motor relay is a crucial component in the starting system of the vehicle, as it is responsible for sending power to the starter motor when the ignition key is turned. When this relay malfunctions or fails, it can lead to difficulties starting the vehicle or even prevent it from starting altogether.

OBDII Code P1651 Infiniti - Starter Motor Relay
P1651 Infiniti Code - Starter Motor Relay

Common Causes of P1651 Infiniti

  1. Faulty starter motor relay
  2. Damaged wiring in the relay circuit
  3. Poor electrical connection
  4. Defective PCM
  5. Corrosion or rust in the relay connections

Symptoms of P1651 Infiniti

  1. Difficulty starting the vehicle
  2. Intermittent starting issues
  3. Clicking sound when trying to start the vehicle
  4. Vehicle not starting at all

How to Fix P1651 Infiniti

  1. Diagnose the issue by using a scan tool to retrieve the trouble code and test the starter motor relay.
  2. Inspect the wiring and connections related to the starter motor relay for any damage or corrosion.
  3. Replace the faulty starter motor relay if necessary.
  4. Clear the trouble code from the PCM memory.
  5. Test the vehicle to ensure the issue has been resolved.

Cost to Fix P1651 Infiniti

The typical repair costs for addressing a P1651 Infiniti code related to the starter motor relay can range from $100 to $300, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's recommended to check with local auto repair shops for a more accurate estimate.

What does this mean?

Tech Notes for P1651 Infiniti

The Starter Motor Relay is part of the Intelligent Power Distribution Module (IPDM) Engine Room (E/R) and is not serviceable.

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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.

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