AutoCodes – GMC – P163A 2017 GMC Sierra

P163A 2017 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 2017 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 261

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 2017 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 2017 GMC Sierra - Control Module Fuel Pressure Regulator 1 Control System Circuitry Performance - AutoCodes.com — P163A 2017 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 2017 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 2017 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 2017 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 2017 GMC Sierra code?

Need more information on how to fix the P163A 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 2017 GMC Sierra Code

What does the OBDII code P163A mean for a 2017 GMC Sierra?

P163A indicates a performance issue with the fuel pressure regulator control circuitry in the engine control module (ECM).

What symptoms might I experience if my GMC Sierra has the P163A code?

Common symptoms include poor engine performance, reduced fuel efficiency, rough idling, and possible stalling.

What could cause the P163A code to trigger in my GMC Sierra?

Potential causes include a faulty fuel pressure regulator, damaged wiring or connectors, issues with the ECM, or a fuel pump malfunction.

How can I diagnose the P163A code?

Start by visually inspecting the wiring and connectors related to the fuel pressure regulator. Then use a multimeter to test the regulator and check for proper voltage and resistance.

What repairs are typically needed to fix the P163A code?

Repairs may involve replacing the fuel pressure regulator, repairing damaged wiring, or reprogramming or replacing the ECM if it is determined to be faulty.

Can I drive my GMC Sierra with the P163A code?

While it may be possible to drive the vehicle, it is not recommended as it can lead to poor engine performance and further damage if left unaddressed.

How can I prevent the P163A code from occurring in the future?

Regular maintenance, including checking fuel system components and electrical connections, can help prevent issues related to the fuel pressure regulator.

Is there any specific tool required to clear the P163A code after repairs?

An OBDII scanner or code reader is typically required to clear the code from the vehicle's computer after repairs have been made.

What should I do if the P163A code returns after repairs?

If the code returns, it may indicate an underlying issue that was not addressed. Recheck all related components and wiring, and consider consulting a professional technician for further diagnosis.