AutoCodes – GMC – P01D2 2017 GMC Sierra

P01D2 2017 GMC Sierra Code - Cylinder 4 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: P01D2 2017 GMC Sierra indicates Cylinder 4 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 187

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 P01D2 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 P01D2 2017 GMC Sierra - Cylinder 4 Injection Timing Advanced - AutoCodes.com — P01D2 2017 GMC Sierra Code - Cylinder 4 Injection Timing Advanced

What does this mean?

What are the Possible Causes of the DTC P01D2 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 P01D2 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 P01D2 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 P01D2 2017 GMC Sierra code?

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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 P01D2 2017 GMC Sierra Code

What does the OBDII code P01D2 mean on a 2017 GMC Sierra?

P01D2 indicates that the engine control module (ECM) has detected that the fuel injection timing for Cylinder 4 is advanced beyond the acceptable range.

What are the common symptoms of code P01D2 in a 2017 GMC Sierra?

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

What causes the P01D2 code to appear in a GMC Sierra?

Possible causes include a malfunctioning fuel injector, a faulty fuel injector control module, wiring issues, or incorrect timing calibration.

Can I drive my 2017 GMC Sierra with the P01D2 code active?

While the vehicle may still be drivable, continuing to operate it with this code can lead to engine damage or reduced performance. Itâ€™s best to address the issue promptly.

How do mechanics diagnose the P01D2 code?

Mechanics will use an OBDII scanner to confirm the code, inspect the wiring and connectors for damage, test the injector for Cylinder 4, and check the ECM for software or hardware faults.

What repairs are typically needed to fix the P01D2 code?

Common repairs include replacing the faulty injector, repairing damaged wiring or connectors, reprogramming or updating the ECM, or replacing the fuel injector control module.

How much does it cost to fix the P01D2 code on a 2017 GMC Sierra?

Repair costs depend on the root cause. Replacing a fuel injector typically costs between $200 and $500, while ECM reprogramming or module replacement could range from $100 to $1,000.

Can a dirty fuel injector cause the P01D2 code?

Yes, a clogged or dirty fuel injector may disrupt proper timing and trigger the P01D2 code. Cleaning or replacing the injector may resolve the issue.

Is an ECM update required to fix the P01D2 code?

In some cases, an ECM reprogramming or software update may be required to address timing issues or recalibrate the system.

How can I prevent the P01D2 code from occurring again?

Regular maintenance, such as using quality fuel, cleaning fuel injectors, and addressing engine issues promptly, can help prevent this code from reappearing.