AutoCodes – GMC – P161A GMC

P161A GMC Code - Glow Plug Control Module Not Programmed

Quick Answer

This diagnostic is addressed if the Glow plug Control Module (GPCM) is not programmed. Common causes include Reprogram Glow plug Control Module (GPCM), Faulty Glow plug Control Module. 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: P161A GMC indicates Glow Plug Control Module Not Programmed.
Common causes: Common causes include Reprogram Glow plug Control Module (GPCM), Faulty Glow plug Control Module.
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 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 Jul 26, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P161A GMC Description

This diagnostic is addressed if the Glow plug Control Module (GPCM) is not programmed. The Diagnostic Trouble Code (DTC) will be set when the Glow plug Control Module is not programmed.

OBDII Code P161A GMC - Glow Plug Control Module Not Programmed - AutoCodes.com — P161A GMC Code - Glow Plug Control Module Not Programmed

What does this mean?

What are the Possible Causes of the DTC P161A GMC?

Reprogram Glow plug Control Module (GPCM)
Faulty Glow plug Control Module

How to Fix the DTC P161A 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 P161A 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 P161A GMC code?

Need more information on how to fix the P161A GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P161A GMC 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 P161A GMC Code

1. What are the common symptoms of OBDII code P161A GMC (Glow Plug Control Module Not Programmed)?

- Common symptoms include hard starting, rough idling, reduced engine power, and the illumination of the check engine light.

2. What can cause the OBDII code P161A GMC to appear?

- The code can be triggered by a faulty glow plug control module, a software issue, or a problem with the control module programming.

3. How can I diagnose the cause of the OBDII code P161A GMC?

- Diagnosing the issue typically involves using a diagnostic scanner to read the code and check for any related faults in the glow plug control module or its programming.

4. Can I still drive my vehicle with the OBDII code P161A GMC present?

- It is not recommended to drive the vehicle with this code present, as it can lead to performance issues and potential engine damage if left unresolved.

5. What are the repair options for fixing OBDII code P161A GMC?

- Repair options may include reprogramming the glow plug control module, replacing the control module if faulty, or addressing any underlying software issues.

6. How much does it cost to repair OBDII code P161A GMC?

- Repair costs can vary depending on the specific cause of the issue, but they may range from a few hundred to over a thousand dollars, including parts and labor.

7. Can I reset the OBDII code P161A GMC myself?

- While you can clear the code using a diagnostic scanner, it is important to diagnose and address the underlying issue to prevent the code from reappearing.

8. Is the Glow Plug Control Module Not Programmed a common issue in GMC vehicles?

- This issue can occur in some GMC vehicles with glow plug control modules, especially in diesel engines, but the frequency may vary depending on the model and year.

9. How long does it take to repair OBDII code P161A GMC?

- The repair time can vary depending on the exact cause of the issue and the complexity of the repair, but it may take a few hours to a full day in some cases.

10. Can a DIY enthusiast fix the OBDII code P161A GMC at home?

- While some experienced DIY enthusiasts may be able to diagnose and address the issue themselves, it is recommended to consult a professional mechanic for proper diagnosis and repair to ensure the problem is fully resolved.