What is OBD-II Code P263E – Glow Plug Control Module 1 Over Temperature

What is OBD-II Code P263E – Glow Plug Control Module 1 Over Temperature

When your car starts showing engine problems, one of the initial things that a mechanic needs to examine is the OBD-II codes. The OBD-II is a system that tracks an extensive range of functions of any vehicle, including the emissions control systems. OBD-II codes offer detailed information about any problem with the engine and its subsystems that might be affecting the vehicle’s performance. Any code that appears on your dashboard is an indication that there is something wrong with your engine, and it needs to be checked up. One such code is the P263E, which means that there is an Over Temperature problem with the Glow Plug Control Module 1. In this article, we’ll examine the causes and symptoms of the P263E code and the steps required to resolve this issue.

Causes of P263E Code

The P263E code signifies a malfunction in the glow plug control module 1 as a result of the over-temperature of the same. Multiple reasons might be why the module is getting excessively heated. Some of the common causes of the P263E code are discussed below:

1. Damaged or Faulty Glow Plug Control Module: The Glow Plug Control Module has a thermistor that tracks the temperature of the module. If the thermistor has become non-responsive, that can cause the input signal to be out of the normal range, leading to the triggering of the P263E code.

2. Wiring Issues: If there are any problems with the wiring of the engine control module or other circuits that are linked to the glow plug control module to monitor its temperature, the P263E code may be triggered.

3. Electrical System Issues: A malfunction in the electrical system of the vehicle caused by issues like a weak battery or alternator can also cause the P263E code to appear on your car’s dashboard.

Symptoms of P263E Code

When the P263E code appears on your dashboard, it is normally accompanied by some symptoms that you might notice. Some of these symptoms are discussed below:

1. Rough Starting and Idling: One of the most common signs of the P263E code is difficulty starting the engine or the engine stalling soon after starting. If your car seems to start unevenly or has trouble idling, you might be experiencing the P263E code.

2. Glowing Engine Light: P263E code triggers the engine light on the dashboard of your car, indicating that something is wrong with the engine. It is essential not to disregard such lights as they serve as vital signals.

3. Reduced Engine Performance: When your engine performs poorly, it means that one of the subsystems is not functioning correctly, and in this case, it could be the Glow Plug Control Module 1.

How to Repair the P263E Code

Now that we’ve examined the causes and symptoms of the P263E code let’s walk you through the process of fixing this issue:

1. Inspection: The initial step to fixing the P263E code is to have a detailed examination of the glow plug control module and its wiring harness. Look out for any apparent signs of damage to the module or the wiring that might be causing the code. Proper inspection of these components may significantly reduce the time required to get your engine running healthily again.

2. Replacing the Glow Plug Control Module: If a faulty Glow Plug Control Module is the cause of the P263E code, then replacing it is the obvious solution. With the new module, you can expect better engine performance, improved mileage, and lower emissions.

3. Rewiring: If the source of the code is damaged wiring or connectors, the mechanic has to examine each wire for continuity, repairing any that show signs of damage. After that, they must do a thorough evaluation of the vehicle to ensure that no other issues cause the P263E code to resurface.

Frequently Asked Questions

1. What is the Glow Plug Control Module?

The Glow Plug Control Module (GPCM) is a device in a vehicle that monitors and regulates the glow plugs needed for the diesel engines to start. Glow plugs heat up the engine block and cylinders to start the engine. The GPCM automates the control of the glow plugs, keeping combustion temperatures in check.

2. Can I drive my vehicle with P263E code?

We suggest that you avoid driving your car when it shows the P263E code, as it can lead to more severe engine problems if neglected for extended periods. It is better to seek a professional mechanic’s service and fix the problem immediately.

3. How much will it cost me to repair P263E code?

The cost of repairing the P263E code entirely depends on the severity of the problem and the make and model of your vehicle. The repair costs can range anywhere from $100 to $500 on average, including the cost for replacement parts and labor charges.

4. Can I get the P263E code diagnosed without visiting a mechanic?

The P263E code can be diagnosed by the mechanic using a scanning tool that can read the OBD-II codes. Therefore, it is advisable to seek a mechanic’s assistance and get a proper diagnosis. However, there are electronic devices available in the market that can scan and diagnose the codes, but they are limited in their abilities and may not give an accurate diagnosis.

5. How often should I get my engine checked for issues like P263E code?

We recommend that you get your vehicle serviced routinely or at least once every six months. Maintenance tasks such as oil changes, checking brakes, checking battery power, and diagnostic scanning can help prevent any significant issues from developing in your vehicle.


The P263E code can be daunting, mostly to someone who hasn’t previously encountered it. However, with the help of a professional mechanic, identifying and resolving the issue can be a breeze. In this article, we have explored what the P263E code implies, its triggers, symptoms, and how to fix it. By following these tips, you can keep your engine running at its optimal performance, achieve better fuel efficiency, and avoid any expensive repairs.

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