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AutoCodes – GMC – P01CD 2017 GMC Sierra

P01CD 2017 GMC Sierra Code - Cylinder 2 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
P01CD 2017 GMC Sierra indicates Cylinder 2 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 177
How popular is this code, among other codes? Low
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Table of contents Created and updated by William Orellana on Mar 22, 2024
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Code P01CD 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 P01CD 2017 GMC Sierra - Cylinder 2 Injection Timing Retarded - AutoCodes.com
P01CD 2017 GMC Sierra Code - Cylinder 2 Injection Timing Retarded
What does this mean?

What are the Possible Causes of the DTC P01CD 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 P01CD 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 P01CD 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 P01CD 2017 GMC Sierra code?

Need more information on how to fix the P01CD 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P01CD 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 P01CD 2017 GMC Sierra Code

1. What does the OBDII code P01CD mean on a 2017 GMC Sierra?

P01CD indicates that the injection timing for cylinder 2 is retarded, meaning the fuel injector is not delivering fuel at the correct time.

2. What are the common symptoms of code P01CD in a 2017 GMC Sierra?

Symptoms may include rough idling, reduced engine performance, poor fuel economy, difficulty starting, and the check engine light turning on.

3. What causes the P01CD code to appear on a 2017 GMC Sierra?

Common causes include a faulty fuel injector, wiring or connection issues, a malfunctioning ECM, or carbon buildup affecting the injector.

4. Can I drive my 2017 GMC Sierra with the P01CD code?

While it may be possible to drive, it’s not recommended as it can lead to further engine damage or decreased performance over time.

5. How is the P01CD code diagnosed?

A technician will use a scan tool to confirm the code, inspect the fuel injector, wiring, and connections, and may perform a cylinder balance test or examine the ECM.

6. How do you fix the P01CD code on a 2017 GMC Sierra?

Repairs may involve cleaning or replacing the fuel injector, repairing damaged wiring, updating or reprogramming the ECM, or addressing carbon buildup.

7. What tools are needed to fix the P01CD code on a 2017 GMC Sierra?

Common tools include an OBDII scanner, multimeter, and specialized tools for fuel injector removal and cleaning.

8. How much does it cost to repair the P01CD code on a 2017 GMC Sierra?

Repair costs vary, but they typically range from $200 to $500, depending on whether the issue is with the injector, wiring, or ECM.

9. Can a dirty fuel injector cause the P01CD code?

Yes, a dirty or clogged fuel injector can disrupt fuel delivery timing and trigger the P01CD code.

10. Will clearing the P01CD code with a scanner fix the issue?

Clearing the code may temporarily turn off the check engine light, but it won’t resolve the underlying issue causing the code to appear.

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