P01D6 GMC Code - Cylinder 6 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
- P01D6 GMC indicates Cylinder 6 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.
Code P01D6 GMC Description
What are the Possible Causes of the DTC P01D6 GMC?
- 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 P01D6 GMC?
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 P01D6 GMC 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 P01D6 GMC code?
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Need Help with the Code?
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Information for Specific GMC Models
- P01D6 2014 GMC Sierra — Cylinder 6 Injection Timing Advanced
- P01D6 2015 GMC Sierra — Cylinder 6 Injection Timing Advanced
- P01D6 2016 GMC Sierra — Cylinder 6 Injection Timing Advanced
- P01D6 2017 GMC Sierra — Cylinder 6 Injection Timing Advanced
- P01D6 2018 GMC Sierra — Cylinder 6 Injection Timing Advanced
Frequently Asked Questions about P01D6 GMC Code
What does the OBDII code P01D6 mean on a GMC vehicle?
P01D6 indicates that the injection timing for cylinder 6 is advanced beyond the specified range set by the engine control module (ECM).
What are the common symptoms of the P01D6 code?
Symptoms may include rough engine idle, reduced fuel efficiency, poor acceleration, engine misfires, and an illuminated check engine light.
What causes the P01D6 code to appear?
Common causes include faulty fuel injectors, issues with the timing system, wiring problems, a malfunctioning ECM, or carbon buildup affecting injector performance.
Can driving with the P01D6 code cause damage to my GMC vehicle?
Yes, prolonged driving with advanced injection timing can lead to engine damage, reduced performance, and increased emissions.
How can I diagnose the P01D6 code on my GMC vehicle?
Use an OBDII scanner to verify the code, inspect the injector wiring and connections for cylinder 6, and check the timing system for wear or damage.
What repairs can fix the P01D6 code?
Repairs may include replacing a faulty injector, cleaning or replacing carbon-clogged components, repairing damaged wiring, or reprogramming the ECM.
Does the P01D6 code require a software update to fix?
In some cases, a software update or ECM reprogramming may be necessary if the issue stems from incorrect calibration.
How much does it cost to repair the P01D6 code on a GMC vehicle?
Repair costs vary but may range from $200 to $800 depending on whether parts like injectors or wiring need replacement.
Can the P01D6 code be caused by dirty fuel?
Yes, contaminated or low-quality fuel can lead to injector timing issues, including the P01D6 code.
Should I reset the P01D6 code without repairing the issue?
No, resetting the code without addressing the underlying issue can lead to recurring problems and potential engine damage.
Discuss the causes and fixes for P01D6 GMC OBDII Code
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