AutoCodes – Generic – P01D5

P01D5 Code - Cylinder 6 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: P01D5 indicates Cylinder 6 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 941

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 P01D5 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 P01D5 - Cylinder 6 Injection Timing Retarded - AutoCodes.com — P01D5 Code - Cylinder 6 Injection Timing Retarded

What does this mean?

What are the Possible Causes of the DTC P01D5?

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 P01D5?

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 P01D5 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 P01D5 code?

Need more information on how to fix the P01D5 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P01D5 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P01D5 Chevrolet — Cylinder 6 Injection Timing Retarded
P01D5 GMC — Cylinder 6 Injection Timing Retarded

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 P01D5 Code

1. What does the OBDII code P01D5 mean?

P01D5 indicates that the injection timing for cylinder 6 is delayed or retarded beyond the acceptable range set by the vehicle's engine control module (ECM).

2. What are the common symptoms of code P01D5?

Symptoms may include rough idling, reduced engine performance, increased fuel consumption, difficulty starting the engine, and possible engine misfires.

3. What causes the P01D5 code to appear?

Common causes include a malfunctioning fuel injector, a faulty injection timing sensor, wiring issues, carbon buildup on the injector, or problems with the engine control module (ECM).

4. Can I drive my car with a P01D5 code?

Driving with a P01D5 code is not recommended, as it can lead to poor engine performance, increased fuel usage, and potential long-term damage to the engine if not addressed promptly.

5. How is the P01D5 code diagnosed?

Diagnosis involves scanning the vehicle for trouble codes, inspecting the fuel injector for cylinder 6, checking wiring connections, and testing the injection timing sensor and ECM functionality.

6. What repairs can fix the P01D5 code?

Repairs may include cleaning or replacing the cylinder 6 fuel injector, repairing or replacing damaged wiring, replacing the injection timing sensor, or reprogramming/updating the ECM.

7. How much does it cost to fix a P01D5 code?

Repair costs vary based on the issue but may range from $200 to $600, depending on whether the problem involves the injector, sensor, wiring, or ECM.

8. Can a dirty fuel injector cause the P01D5 code?

Yes, a dirty or clogged fuel injector can disrupt injection timing and trigger the P01D5 code, especially if cylinder 6 is affected.

9. How can I prevent the P01D5 code from recurring?

Regular maintenance, such as cleaning fuel injectors, checking wiring connections, and addressing engine issues promptly, can help prevent the P01D5 code from recurring.

10. Will resetting the code fix the P01D5 issue?

Resetting the code might clear the warning temporarily, but the underlying issue causing the P01D5 code must be addressed to prevent it from returning.