AutoCodes – GMC – P163A 2015 GMC Sierra

P163A 2015 GMC Sierra Code - Control Module Fuel Pressure Regulator 1 Control System Circuitry Performance

Quick Answer

This diagnostic applies to internal microprocessor integrity conditions within the Engine Control Module (ECM) or an out-of-range high-pressure fuel pump actuator current. Common causes include Faulty High Pressure Fuel Pump, High Pressure Fuel Pump harness is open or shorted, High Pressure Fuel Pump 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: P163A 2015 GMC Sierra indicates Control Module Fuel Pressure Regulator 1 Control System Circuitry Performance.
Common causes: Common causes include Faulty High Pressure Fuel Pump, High Pressure Fuel Pump harness is open or shorted, High Pressure Fuel Pump 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 313

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 Aug 17, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P163A 2015 GMC Sierra Description

This diagnostic applies to internal microprocessor integrity conditions within the Engine Control Module (ECM) or an out-of-range high-pressure fuel pump actuator current. The Diagnostic Trouble Code (DTC) will be set if the ECM detects a condition with the integrated circuits of the High-Pressure Fuel Pump actuator driver module or if the ECM detects that the current used to drive the High-Pressure Fuel Pump actuator is out of range for greater than 4 s.

OBDII Code P163A 2015 GMC Sierra - Control Module Fuel Pressure Regulator 1 Control System Circuitry Performance - AutoCodes.com — P163A 2015 GMC Sierra Code - Control Module Fuel Pressure Regulator 1 Control System Circuitry Performance

What does this mean?

What are the Possible Causes of the DTC P163A 2015 GMC Sierra?

Faulty High Pressure Fuel Pump
High Pressure Fuel Pump harness is open or shorted
High Pressure Fuel Pump circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P163A 2015 GMC Sierra?

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 P163A 2015 GMC Sierra 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 P163A 2015 GMC Sierra code?

Need more information on how to fix the P163A 2015 GMC Sierra 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 P163A 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P163A in a 2015 GMC Sierra?

Common symptoms include rough idling, engine stalling, decreased fuel efficiency, and difficulty starting the vehicle.

2. What does the OBDII code P163A indicate in a 2015 GMC Sierra?

OBDII code P163A specifically refers to the Control Module Fuel Pressure Regulator 1 Control System Circuitry Performance in the vehicle.

3. What are the possible causes of OBDII code P163A in a 2015 GMC Sierra?

Potential causes of this code may include a faulty fuel pressure regulator, damaged wiring or connectors in the fuel pressure regulator circuit, or issues with the control module itself.

4. How can I diagnose the OBDII code P163A in my 2015 GMC Sierra?

Diagnosing this code typically involves using a diagnostic scanner to retrieve the specific code, inspecting the fuel pressure regulator and related circuitry for any visible damage, and testing the components for proper functionality.

5. Can I drive my 2015 GMC Sierra with OBDII code P163A?

It is not recommended to drive the vehicle with this code present, as it can lead to potential performance issues and further damage to the fuel system.

6. How can I repair OBDII code P163A in my 2015 GMC Sierra?

Repairing this code may involve replacing the fuel pressure regulator, repairing or replacing damaged wiring or connectors, or resetting the control module to clear the code.

7. Will resetting the OBDII code P163A in my 2015 GMC Sierra fix the issue?

Resetting the code may temporarily clear the warning, 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 problem.

8. Is it necessary to take my 2015 GMC Sierra to a mechanic for OBDII code P163A?

While some DIY enthusiasts may be able to diagnose and repair this code, seeking professional help from a mechanic with experience in handling fuel system issues is recommended for an accurate and thorough fix.

9. How much does it typically cost to repair OBDII code P163A in a 2015 GMC Sierra?

The cost of repairing this code can vary depending on the exact cause of the issue, the replacement parts needed, and the labor rates of the mechanic. It is advisable to obtain quotes from different repair shops for a more accurate estimate.

10. Can OBDII code P163A cause any long-term damage to my 2015 GMC Sierra if left unresolved?

Leaving this code unresolved can potentially lead to more severe fuel system problems, decreased engine performance, and even engine damage over time. It is best to address the issue promptly to prevent further complications.