AutoCodes – Chevrolet – P163D Chevrolet

P163D Chevrolet Code - Glow Plug Control Module Secondary Circuit

Quick Answer

The Glow Plug Control Module (GPCM) has the ability to perform internal diagnostics for the voltage and output state of the glow plugs. Common causes include Faulty Glow Plug Control Module, Glow Plug Control Module harness is open or shorted, Glow Plug Control Module circuit poor electrical connection. 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: P163D Chevrolet indicates Glow Plug Control Module Secondary Circuit.
Common causes: Common causes include Faulty Glow Plug Control Module, Glow Plug Control Module harness is open or shorted, Glow Plug Control Module circuit poor electrical connection.
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 3,824

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 24, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P163D Chevrolet Description

The Glow Plug Control Module (GPCM) has the ability to perform internal diagnostics for the voltage and output state of the glow plugs. If the GPCM receives a command to turn on the glow plugs, and Ignition 1 Signal voltage is low this code will set. If the GPCM detects voltage on the glow plug circuits while glow plugs are not commanded on this code will set. If the GPCM detects a ground offset of 1.5 volts between the GPCM ground and the glow plug ground circuit this code will be set. The GPCM will send a message to the Engine Control Module (ECM) to set this Diagnostic Trouble Code (DTC).

OBDII Code P163D Chevrolet - Glow Plug Control Module Secondary Circuit - AutoCodes.com — P163D Chevrolet Code - Glow Plug Control Module Secondary Circuit

What does this mean?

What are the Possible Causes of the DTC P163D Chevrolet?

Faulty Glow Plug Control Module
Glow Plug Control Module harness is open or shorted
Glow Plug Control Module circuit poor electrical connection

How to Fix the DTC P163D Chevrolet?

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 P163D Chevrolet 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.

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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 P163D Chevrolet Code

1. What are the common symptoms of OBDII code P163D in a Chevrolet related to the Glow Plug Control Module Secondary Circuit?

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

2. What are the potential causes of OBDII code P163D in a Chevrolet related to the Glow Plug Control Module Secondary Circuit?

- Possible causes may include a faulty glow plug control module, damaged wiring or connectors, poor electrical connections, or a malfunctioning glow plug.

3. How can I diagnose OBDII code P163D in a Chevrolet related to the Glow Plug Control Module Secondary Circuit?

- Diagnosis typically involves using a scan tool to read the fault codes, testing the glow plug control module, inspecting the wiring and connectors for damage, and checking the glow plugs for proper functioning.

4. Can I still drive my Chevrolet with OBDII code P163D related to the Glow Plug Control Module Secondary Circuit?

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

5. How can I repair OBDII code P163D in a Chevrolet related to the Glow Plug Control Module Secondary Circuit?

- Repair may involve replacing the glow plug control module, repairing or replacing damaged wiring or connectors, ensuring proper electrical connections, and replacing any faulty glow plugs.

6. Are there any DIY tips for fixing OBDII code P163D in a Chevrolet related to the Glow Plug Control Module Secondary Circuit?

- While some basic troubleshooting like checking the connections and fuses can be done, it is recommended to seek professional help for accurate diagnosis and repair.

7. Is it necessary to reset the OBDII system after repairing OBDII code P163D in a Chevrolet related to the Glow Plug Control Module Secondary Circuit?

- Yes, it is important to clear the fault codes and reset the OBDII system after completing the repairs to ensure the issue has been resolved.

8. Can extreme weather conditions affect the occurrence of OBDII code P163D in a Chevrolet related to the Glow Plug Control Module Secondary Circuit?

- Yes, extreme cold weather can put additional strain on the glow plug system, potentially leading to issues related to the Glow Plug Control Module Secondary Circuit.

9. How long does it typically take to repair OBDII code P163D in a Chevrolet related to the Glow Plug Control Module Secondary Circuit?

- The repair time can vary depending on the exact cause of the issue, but it may take a few hours to a full day to diagnose and fix the problem.

10. Will ignoring OBDII code P163D in a Chevrolet related to the Glow Plug Control Module Secondary Circuit cause further damage to the vehicle?

- Ignoring this code can lead to more serious engine problems over time, so it is recommended to address the issue promptly to prevent costly repairs in the future.