AutoCodes – Infiniti – P1652 Infiniti

P1652 Infiniti Code - Starter Motor System Communication

Quick Answer

The Engine Control Module (ECM) controls ON/OFF state of the starter relay, according to the engine and vehicle condition. Common causes include Faulty Intelligent Power Distribution Module (IPDM) Engine Room (E/R), IPDM E/R harness is open or shorted, IPDM E/R 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: P1652 Infiniti indicates Starter Motor System Communication.
Common causes: Common causes include Faulty Intelligent Power Distribution Module (IPDM) Engine Room (E/R), IPDM E/R harness is open or shorted, IPDM E/R 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 561

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 Sep 18, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1652 Infiniti Description

The Engine Control Module (ECM) controls ON/OFF state of the starter relay, according to the engine and vehicle condition. The ECM transmits a control signal to the Intelligent Power Distribution Module (IPDM) Engine Room (E/R) by CAN communication. Under normal conditions, the ECM controls and maintains the starter relay in OFF state during the following condition: The engine is running, the selector lever is D position. (CVT models), and the clutch pedal is fully released. (M/T models). When detecting a decrease in engine speed due to rapid deceleration or heavy load conditions, ECM controls and reactivates the starter relay. The IPDM E/R detects a control state of the starter relay and starter control relay and transmits a feedback signal to ECM via CAN communication. The Diagnostic Trouble Code (DTC) will set when the ECM detects a malfunction in the starter motor drive circuit of the IPDM E/R.

OBDII Code P1652 Infiniti - Starter Motor System Communication - AutoCodes.com — P1652 Infiniti Code - Starter Motor System Communication

What does this mean?

What are the Possible Causes of the DTC P1652 Infiniti?

Faulty Intelligent Power Distribution Module (IPDM) Engine Room (E/R)
IPDM E/R harness is open or shorted
IPDM E/R circuit poor electrical connection

How to Fix the DTC P1652 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 does this mean?

Code Tech Notes

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1652 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.

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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 P1652 Infiniti Code

1. What are the common symptoms of OBDII code P1652 in an Infiniti related to the Starter Motor System Communication issue?

The common symptoms include difficulty starting the vehicle, intermittent starting issues, and the engine not cranking when the key is turned.

2. What are the possible causes of OBDII code P1652 in an Infiniti?

Possible causes of this code could be a faulty starter motor, damaged wiring or connectors in the starter motor system, a failing starter relay, or a problem with the engine control module (ECM).

3. How can I diagnose the OBDII code P1652 in my Infiniti related to the Starter Motor System Communication?

Diagnosis typically involves checking the starter motor, inspecting the wiring and connectors for any damage, testing the starter relay, and using a scan tool to communicate with the ECM for further troubleshooting.

4. Can a DIY enthusiast repair OBDII code P1652 in an Infiniti, or is it best left to professionals?

While some basic checks like inspecting wiring and connectors can be done by DIY enthusiasts, diagnosing and repairing more complex issues related to the starter motor system may require the expertise of a professional mechanic.

5. Are there any quick tips for troubleshooting OBDII code P1652 in an Infiniti?

Quick tips include checking the battery's condition and charge, ensuring the starter motor connections are secure, and inspecting the starter relay for any visible damage or issues.

6. Is it safe to continue driving my Infiniti with OBDII code P1652 related to the Starter Motor System Communication?

It is not recommended to drive your vehicle with this code as it can lead to potential starting failures, leaving you stranded. It's best to address the issue promptly to avoid further complications.

7. How much can I expect to pay for repairing OBDII code P1652 in my Infiniti at a professional service center?

The cost of repairing this code can vary depending on the exact cause of the issue and labor rates in your area. It's advisable to get a diagnosis from a trusted mechanic to receive an accurate estimate.

8. Will resetting the OBDII code P1652 in my Infiniti make the issue go away permanently?

Resetting the code may temporarily clear the warning light, but if the root cause of the Starter Motor System Communication problem is not addressed, the code is likely to reappear. It's essential to diagnose and fix the underlying issue.

9. Can extreme weather conditions affect the occurrence of OBDII code P1652 in an Infiniti?

Yes, extreme cold or hot weather can sometimes exacerbate issues related to the starter motor system, potentially leading to the triggering of this code. Ensuring your vehicle is properly maintained can help mitigate these effects.

10. How long does it typically take to repair OBDII code P1652 in an Infiniti?

The repair time can vary depending on the specific cause of the issue. Simple fixes like replacing a faulty starter relay may take less time, while diagnosing and replacing a defective starter motor could be more time-consuming.