AutoCodes – Infiniti – B2603 Infiniti

B2603 Infiniti Code - Shift Position Status

Quick Answer

The Body Control Module (BCM) monitors the Shift Position. Common causes include Faulty CVT Device, CVT Device harness is open or shorted, CVT Device 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: B2603 Infiniti indicates Shift Position Status.
Common causes: Common causes include Faulty CVT Device, CVT Device harness is open or shorted, CVT Device 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 9,673

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 Jan 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2603 Infiniti Description

The Body Control Module (BCM) monitors the Shift Position. The Diagnostic Trouble Code (DTC) sets when the BCM detects the following status for 500 ms or more when the shift is in P position and, the ignition switch is in ON position.

OBDII Code B2603 Infiniti - Shift Position Status - AutoCodes.com — B2603 Infiniti Code - Shift Position Status

What does this mean?

What are the Possible Causes of the DTC B2603 Infiniti?

Faulty CVT Device
CVT Device harness is open or shorted
CVT Device circuit poor electrical connection
Faulty Park/Neutral Position (PNP) Switch

How to Fix the DTC B2603 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 B2603 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 B2603 Infiniti code?

Need more information on how to fix the B2603 Infiniti code? Get Access to Factory Service Manuals

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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 B2603 Infiniti Code

1. What does OBDII code B2603 for Infiniti Shift Position Status indicate?

The B2603 code in an Infiniti signifies a fault in the shift position status circuit.

2. What are common symptoms of OBDII code B2603 in an Infiniti?

Common symptoms include the inability to start the vehicle, the gear selector not engaging properly, and the dashboard displaying incorrect gear information.

3. What are possible causes of OBDII code B2603 in an Infiniti?

Potential causes of the B2603 code include a faulty shift position sensor, damaged wiring or connectors in the shift position circuit, or a malfunctioning transmission control module.

4. How can I diagnose the OBDII code B2603 in my Infiniti?

Diagnosing the B2603 code typically involves using a professional OBDII scanner to retrieve the code, inspecting the shift position sensor and related wiring, and testing the transmission control module for proper functionality.

5. How serious is the OBDII code B2603 in an Infiniti?

The B2603 code can be serious as it can prevent the vehicle from starting or cause gear shifting issues, impacting the drivability and safety of the vehicle.

6. Can I drive my Infiniti with the OBDII code B2603?

It is not recommended to drive the vehicle with the B2603 code present, as it can lead to unpredictable gear shifting behavior and potential safety hazards.

7. How can I repair the OBDII code B2603 in my Infiniti?

Repairing the B2603 code may involve replacing the shift position sensor, repairing or replacing damaged wiring, or reprogramming the transmission control module.

8. Is it possible to reset the OBDII code B2603 in an Infiniti without repairs?

While you can clear the code temporarily with an OBDII scanner, it is crucial to address the root cause of the issue to prevent the code from reappearing.

9. How much does it cost to fix the OBDII code B2603 in an Infiniti?

The cost of fixing the B2603 code can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. Can the OBDII code B2603 in an Infiniti be prevented?

Regular maintenance and inspections of the shift position sensor and related components can help prevent the occurrence of the B2603 code in an Infiniti.