AutoCodes – GMC – P01D4 2016 GMC Sierra

P01D4 2016 GMC Sierra Code - Cylinder 5 Injection Timing Advanced

Quick Answer

The Engine Control Module (ECM) has the ability to learn injector timing performance. Common causes include Fuel Type Incorrect, Fuel Contaminated/Poor Quality, Faulty Fuel Injector 1. 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: P01D4 2016 GMC Sierra indicates Cylinder 5 Injection Timing Advanced.
Common causes: Common causes include Fuel Type Incorrect, Fuel Contaminated/Poor Quality, Faulty Fuel Injector 1.
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 185

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Mar 22, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P01D4 2016 GMC Sierra Description

The Engine Control Module (ECM) has the ability to learn injector timing performance. When the engine is at operating temperature, throttle closed and in deceleration fuel cut-off mode, the ECM will pulse each injector individually and measure the changes in rotational speed of the crankshaft using the input from the crankshaft position sensor. The ECM will run this diagnostic at one fuel rail pressure operating point for each injector. The ECM stores the injector timing value. The Diagnostic Trouble Code (DTC) will be set when the Fuel Injection Timing is out of range.

OBDII Code P01D4 2016 GMC Sierra - Cylinder 5 Injection Timing Advanced - AutoCodes.com — P01D4 2016 GMC Sierra Code - Cylinder 5 Injection Timing Advanced

What does this mean?

What are the Possible Causes of the DTC P01D4 2016 GMC Sierra?

Fuel Type Incorrect
Fuel Contaminated/Poor Quality
Faulty Fuel Injector 1
Fuel Injector 1 harness is open or shorted
Fuel Injector 1 circuit poor electrical connection
Engine Mechanical Problem

How to Fix the DTC P01D4 2016 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 P01D4 2016 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 P01D4 2016 GMC Sierra code?

Need more information on how to fix the P01D4 2016 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 P01D4 2016 GMC Sierra Code

What does the OBDII code P01D4 mean for a 2016 GMC Sierra?

The P01D4 code indicates that the injection timing for cylinder 5 is advanced beyond the manufacturer’s specified range.

What are the common symptoms of the P01D4 code?

Symptoms may include rough idling, decreased fuel efficiency, engine misfires, and an illuminated check engine light.

What causes the P01D4 code on a 2016 GMC Sierra?

Common causes include a faulty fuel injector, issues with the fuel injection timing control system, a malfunctioning camshaft position sensor, or wiring/connectivity problems.

Can I still drive my 2016 GMC Sierra with a P01D4 code?

It’s possible to drive the vehicle, but it’s not recommended, as it can lead to engine damage, poor performance, or increased emissions if left unaddressed.

How is the P01D4 code diagnosed?

A mechanic will use a scan tool to verify the code, inspect the wiring and connectors, test the fuel injector for cylinder 5, and check the camshaft position sensor and timing system.

How can I fix the P01D4 code on my GMC Sierra?

Repairs may include replacing a faulty fuel injector, repairing damaged wiring or connectors, recalibrating the injection timing system, or replacing a defective camshaft position sensor.

What tools are needed to address the P01D4 code?

Tools may include an OBDII scanner, a multimeter for checking electrical components, and specialized tools for inspecting or replacing injectors and sensors.

Can a dirty fuel injector cause the P01D4 code?

Yes, a clogged or malfunctioning fuel injector can disrupt timing and trigger the P01D4 code. Cleaning or replacing the injector may resolve the issue.

How much does it cost to fix a P01D4 code on a 2016 GMC Sierra?

Repair costs can vary, but replacing a fuel injector typically costs $200–$500, while diagnosing and fixing wiring or sensor issues may range from $100–$300.

Will resetting the check engine light clear the P01D4 code permanently?

Resetting the light may temporarily clear the code, but the underlying issue must be resolved to prevent the code from returning.