AutoCodes – GMC – P2623 GMC

P2623 GMC Code - Injector Control Pressure Regulator Circuit/Open

Quick Answer

The Powertrain Control Module (PCM) monitors the Injector Control Pressure Regulator (ICPR) Circuit. Common causes include Faulty Injector Control Pressure Regulator, Injector Control Pressure Regulator harness is open or shorted, Injector Control Pressure Regulator 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: P2623 GMC indicates Injector Control Pressure Regulator Circuit/Open.
Common causes: Common causes include Faulty Injector Control Pressure Regulator, Injector Control Pressure Regulator harness is open or shorted, Injector Control Pressure Regulator 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 1,552

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 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2623 GMC Description

The Powertrain Control Module (PCM) monitors the Injector Control Pressure Regulator (ICPR) Circuit. The PCM sets the OBDII code when the Injector Control Pressure Regulator circuit is out of factory specifications.

OBDII Code P2623 GMC - Injector Control Pressure Regulator Circuit/Open - AutoCodes.com — P2623 GMC Code - Injector Control Pressure Regulator Circuit/Open

What does this mean?

What are the Possible Causes of the DTC P2623 GMC?

Faulty Injector Control Pressure Regulator
Injector Control Pressure Regulator harness is open or shorted
Injector Control Pressure Regulator circuit poor electrical connection

How to Fix the DTC P2623 GMC?

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 P2623 GMC 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 P2623 GMC code?

Need more information on how to fix the P2623 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2623 GMC 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 P2623 GMC Code

1. What are the common symptoms of OBDII code P2623 in a GMC vehicle?

- Common symptoms include rough idling, decreased fuel efficiency, loss of power, and potential stalling.

2. What does the OBDII code P2623 indicate in a GMC vehicle?

- The code P2623 indicates a problem with the Injector Control Pressure Regulator Circuit being open or malfunctioning.

3. What are the possible causes of OBDII code P2623 in a GMC vehicle?

- Possible causes include a faulty injector control pressure regulator, wiring issues, a poor electrical connection, or a defective PCM.

4. How can I diagnose the OBDII code P2623 in my GMC vehicle?

- Diagnosing the code may involve checking the wiring and connections related to the injector control pressure regulator, testing the regulator itself, and using a scan tool to monitor system parameters.

5. Can I still drive my GMC vehicle with the OBDII code P2623 present?

- It is not recommended to drive the vehicle with the code present, as it can lead to further damage and potential safety hazards.

6. How can I repair the OBDII code P2623 in my GMC vehicle?

- Repairs may involve replacing the injector control pressure regulator, repairing any damaged wiring, ensuring proper electrical connections, or reprogramming the PCM.

7. Is it necessary to reset the OBDII code P2623 after making repairs in a GMC vehicle?

- Yes, it is recommended to reset the code using a scan tool after making repairs to see if the issue has been resolved.

8. Can a DIY enthusiast fix the OBDII code P2623 in a GMC vehicle?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair the issue, but professional help is often recommended for accurate diagnosis and proper repair.

9. How much does it cost to repair the OBDII code P2623 in a GMC vehicle?

- Repair costs can vary depending on the specific cause of the issue, but they may range from $100 to $500 or more, including parts and labor.

10. Are there any preventive measures to avoid the OBDII code P2623 in a GMC vehicle?

- Regular maintenance, such as checking and cleaning fuel system components, inspecting wiring harnesses, and addressing any warning signs promptly, can help prevent issues leading to the code P2623.