AutoCodes – GMC – P1599 GMC

P1599 GMC Code - Engine Stall Or Near Stall Detected

Quick Answer

The Engine Control Module (ECM) has the ability to set a diagnostic trouble code (DTC) if the engine stalls when the ignition has not been turned OFF. Common causes for P1599 GMC include wiring or connector problems, a faulty related sensor or actuator, and control module or calibration issues. 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: P1599 GMC indicates Engine Stall Or Near Stall Detected.
Common causes: Common causes for P1599 GMC include wiring or connector problems, a faulty related sensor or actuator, and control module or calibration issues.
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 4,967

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 May 20, 2019

Description
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1599 GMC Description

The Engine Control Module (ECM) has the ability to set a diagnostic trouble code (DTC) if the engine stalls when the ignition has not been turned OFF. This DTC may aid in intermittent diagnosis of a customer complaint of intermittent engine stall. The scan tool Failure Record information can be duplicated under the same stall conditions in an attempt to reproduce the occurrence. Since DTC P1599 is a type D DTC, the ECM will not command the malfunction indicator lamp (MIL) ON. This DTC can set due to a driver error. For example, a vehicle equipped with a manual transaxle in which the clutch was release too quickly causing the engine to stall, will set DTC P1599.

OBDII Code P1599 GMC - Engine Stall Or Near Stall Detected - AutoCodes.com — P1599 GMC Code - Engine Stall Or Near Stall Detected

How to Fix the DTC P1599 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 does this mean?

Code Tech Notes

This code only means that the engine stall. If the P1599 code is set with other codes, the other codes first.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1599 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 P1599 GMC 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 P1599 GMC Code

1. What are the common symptoms of OBDII code P1599 in a GMC vehicle?

- Common symptoms include engine stalling or near-stalling episodes, rough idling, poor acceleration, and potential difficulty starting the engine.

2. What can cause the OBDII code P1599 in a GMC vehicle?

- Potential causes of code P1599 include issues with the crankshaft position sensor, faulty wiring or connections in the sensor circuit, or problems with the engine control module (ECM).

3. How does the OBDII code P1599 affect engine performance in a GMC vehicle?

- The code P1599 can lead to intermittent engine stalling or near-stalling, which can affect the vehicle's drivability and overall performance.

4. Can a dirty or faulty throttle body contribute to OBDII code P1599 in a GMC vehicle?

- Yes, a dirty or faulty throttle body can disrupt the air-fuel mixture and cause engine stalling or near-stalling issues, triggering the P1599 trouble code.

5. How can I diagnose and repair OBDII code P1599 in my GMC vehicle?

- To diagnose and repair code P1599, start by checking the crankshaft position sensor and its related wiring. Ensure all connections are secure and free of corrosion. Clean or replace the sensor if necessary.

6. Is it safe to continue driving my GMC vehicle with OBDII code P1599 present?

- It is not recommended to drive the vehicle with code P1599 present, as engine stalling or near-stalling can pose safety risks. It is best to address the issue promptly.

7. Can a malfunctioning ECM trigger OBDII code P1599 in a GMC vehicle?

- Yes, a malfunctioning ECM can potentially cause code P1599 to be triggered, as the ECM plays a crucial role in monitoring and controlling engine functions.

8. Will resetting the trouble codes clear OBDII code P1599 in a GMC vehicle?

- Resetting the trouble codes may temporarily clear code P1599, but if the underlying issue is not addressed, the code is likely to reappear once the problem resurfaces.

9. Are there any DIY fixes for OBDII code P1599 in a GMC vehicle?

- DIY fixes for code P1599 may include checking and cleaning the throttle body, inspecting and cleaning the crankshaft position sensor, and ensuring all related wiring is intact.

10. How can a professional mechanic help in resolving OBDII code P1599 in a GMC vehicle?

- A professional mechanic can perform a comprehensive diagnostic scan, pinpoint the exact cause of code P1599, and efficiently repair or replace components like the crankshaft position sensor or ECM to resolve the issue effectively.