AutoCodes – GMC – P01D1 2017 GMC Sierra

P01D1 2017 GMC Sierra Code - Cylinder 4 Injection Timing Retarded

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: P01D1 2017 GMC Sierra indicates Cylinder 4 Injection Timing Retarded.
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 161

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 P01D1 2017 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 P01D1 2017 GMC Sierra - Cylinder 4 Injection Timing Retarded - AutoCodes.com — P01D1 2017 GMC Sierra Code - Cylinder 4 Injection Timing Retarded

What does this mean?

What are the Possible Causes of the DTC P01D1 2017 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 P01D1 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 P01D1 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 P01D1 2017 GMC Sierra code?

Need more information on how to fix the P01D1 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P01D1 2017 GMC Sierra 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 P01D1 2017 GMC Sierra Code

1. What does the OBD-II code P01D1 mean for a 2017 GMC Sierra?

The code P01D1 indicates that the injection timing for cylinder 4 is retarded, meaning the fuel injector is spraying fuel later than expected.

2. What are the common symptoms of code P01D1 in a 2017 GMC Sierra?

Symptoms may include rough idling, reduced engine performance, poor fuel economy, increased emissions, and potential misfires.

3. What causes the P01D1 code to appear in a GMC Sierra?

Common causes include a faulty fuel injector, issues with the injector timing mechanism, wiring problems, a malfunctioning PCM, or dirty fuel.

4. Can driving with the P01D1 code damage my GMC Sierra?

Prolonged driving with this code can lead to engine damage, increased wear on cylinder 4, and poor overall performance. It should be addressed promptly.

5. How can I diagnose the P01D1 code in my 2017 GMC Sierra?

Diagnosis involves scanning for codes, inspecting the fuel injector on cylinder 4, checking wiring and connections, and testing the PCM functionality.

6. What repairs are typically needed for the P01D1 code?

Repairs may include replacing the faulty injector, repairing wiring or connectors, cleaning the fuel system, or reprogramming/replacing the PCM.

7. Can a dirty fuel system cause the P01D1 code?

Yes, a dirty or contaminated fuel system can disrupt injector timing and lead to this code.

8. How much does it cost to fix the P01D1 code on a GMC Sierra?

Repair costs vary but can range from $150 to $600, depending on whether the injector, wiring, or PCM needs replacement or reprogramming.

9. Is the P01D1 code specific to cylinder 4?

Yes, this code specifically refers to the injection timing being retarded for cylinder 4 in the engine.

10. Can a software update fix the P01D1 code?

In some cases, updating or reprogramming the PCM may resolve the issue if the timing problem is due to incorrect software parameters.

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