AutoCodes – GMC – P01D4 2015 GMC Sierra

P01D4 2015 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 2015 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 203

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 Mar 22, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P01D4 2015 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 2015 GMC Sierra - Cylinder 5 Injection Timing Advanced - AutoCodes.com — P01D4 2015 GMC Sierra Code - Cylinder 5 Injection Timing Advanced

What does this mean?

What are the Possible Causes of the DTC P01D4 2015 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 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 P01D4 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 P01D4 2015 GMC Sierra code?

Need more information on how to fix the P01D4 2015 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 2015 GMC Sierra Code

What does the OBDII code P01D4 mean on a 2015 GMC Sierra?

The P01D4 code indicates that the fuel injection timing for cylinder 5 is advanced beyond the expected range.

What are the common symptoms of code P01D4 on a 2015 GMC Sierra?

Common symptoms include rough engine idle, decreased fuel efficiency, engine misfires, reduced power, and the illumination of the check engine light.

What causes the P01D4 code to appear on a 2015 GMC Sierra?

Possible causes include a faulty fuel injector, a malfunctioning camshaft or crankshaft position sensor, issues with the engine control module (ECM), or wiring problems in the injector circuit.

Can I drive my 2015 GMC Sierra with the P01D4 code?

Driving with this code is not recommended, as it can lead to poor engine performance, potential damage to other components, and increased emissions.

How is the P01D4 code diagnosed on a 2015 GMC Sierra?

A mechanic will use a scan tool to confirm the code, inspect the wiring and connectors, test the fuel injector, and check the camshaft and crankshaft position sensors.

What repair options are available for resolving the P01D4 code?

Repairs may include replacing the fuel injector for cylinder 5, repairing or replacing damaged wiring, recalibrating or reprogramming the ECM, or replacing faulty sensors.

Can a software issue cause the P01D4 code on a 2015 GMC Sierra?

Yes, outdated or corrupted ECM software can sometimes cause this code. Reprogramming or updating the ECM may resolve the issue.

How much does it cost to fix the P01D4 code on a 2015 GMC Sierra?

The repair cost can vary depending on the root cause but typically ranges from $150 to $500, with fuel injector replacement being one of the more expensive fixes.

What tools are needed to troubleshoot the P01D4 code?

Tools include an OBDII scan tool, a multimeter for testing electrical circuits, and possibly an injector tester or oscilloscope for detailed diagnostics.

Can ignoring the P01D4 code damage my 2015 GMC Sierra’s engine?

Yes, ignoring this code can lead to further engine damage, decreased performance, and higher repair costs due to prolonged stress on the affected components.