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P0650 2017 GMC Sierra Code - Malfunction Indicator Lamp Control Circuit

Quick Answer

The P0650 diagnostic trouble code (DTC) on a 2017 GMC Sierra indicates a malfunction in the Malfunction Indicator Lamp (MIL) control circuit. Common causes include Faulty wiring or connectors in the MIL control circuit, Malfunctioning MIL control module, Issues with the vehicle's powertrain control module (PCM). 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
P0650 2017 GMC Sierra indicates Malfunction Indicator Lamp Control Circuit.
Common causes
Common causes include Faulty wiring or connectors in the MIL control circuit, Malfunctioning MIL control module, Issues with the vehicle's powertrain control module (PCM).
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0650 2017 GMC Sierra Description

The P0650 diagnostic trouble code (DTC) on a 2017 GMC Sierra indicates a malfunction in the Malfunction Indicator Lamp (MIL) control circuit. The MIL, commonly known as the check engine light, is a crucial component of the vehicle's onboard diagnostics system. When this code appears, it means that there is a problem with the circuit responsible for controlling the illumination of the MIL.

OBDII Code P0650 2017 GMC Sierra - Malfunction Indicator Lamp Control Circuit
P0650 2017 GMC Sierra Code - Malfunction Indicator Lamp Control Circuit

Common Causes of P0650 2017 GMC Sierra

  1. Faulty wiring or connectors in the MIL control circuit.
  2. Malfunctioning MIL control module.
  3. Issues with the vehicle's powertrain control module (PCM).
  4. Electrical problems within the circuit.
  5. Corrosion or damage to the circuit components.

Symptoms of P0650 2017 GMC Sierra

  1. Check engine light fails to illuminate when starting the vehicle.
  2. Check engine light remains illuminated even when there are no issues present.
  3. Difficulty monitoring the vehicle's status and identifying potential problems.
  4. Increased emissions output and potential failure of emissions tests.

How to Fix P0650 2017 GMC Sierra

  1. Diagnose the issue using a scan tool to identify the specific cause of the P0650 DTC.
  2. Inspect the wiring and connectors in the MIL control circuit for any damage or corrosion.
  3. Test the MIL control module and the vehicle's PCM for proper functionality.
  4. Repair or replace any faulty components within the circuit, such as wiring, connectors, or modules.
  5. Clear the DTC and test the vehicle to ensure that the check engine light functions correctly.

Cost to Fix P0650 2017 GMC Sierra

The typical repair costs for addressing the P0650 DTC on a 2017 GMC Sierra can range from $100 to $300, depending on the extent of the issue and the cost of replacement parts. This estimate includes the labor costs for diagnosing the problem, repairing or replacing components, and clearing the DTC. It's essential to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops commonly charge between $80 and $150 per hour for labor, but rates may be higher in metropolitan areas or at dealerships. Independent shops often offer lower labor rates, so it's advisable to check local rates for a more precise estimate.

What does this mean?

Tech Notes for P0650 2017 GMC Sierra

If the condition is intermittent, move the related harnesses and connectors while monitoring the scan tool MIL control circuit status parameters. Perform this test with the ignition ON and the engine OFF, and with the engine running. The MIL control circuit status parameters change from OK or Not Run to Malfunction if there is a condition with a circuit or a connection.

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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 P0650 2017 GMC Sierra Code

1. What does the OBDII code P0650 mean on a 2017 GMC Sierra?

P0650 indicates an issue with the Malfunction Indicator Lamp (MIL) Control Circuit, which may prevent the check engine light from functioning properly.

2. What are the common symptoms of code P0650?

The most common symptom is that the check engine light does not illuminate during startup or when a fault is detected in the system.

3. What causes the P0650 code to appear?

Common causes include a faulty MIL bulb, damaged wiring or connectors in the MIL circuit, a malfunctioning instrument cluster, or a problem with the Powertrain Control Module (PCM).

4. Can I drive my 2017 GMC Sierra with the P0650 code active?

While the vehicle may still run, the P0650 code could prevent you from being alerted to other engine or emissions-related issues. It’s recommended to address the issue promptly.

5. How do I diagnose the P0650 code?

Start by checking the MIL bulb for functionality, inspecting the wiring and connectors in the circuit for damage, and testing the instrument cluster and PCM for faults.

6. What tools are needed to fix the P0650 code?

You may need a diagnostic scan tool, a multimeter for electrical testing, and possibly specialized tools for accessing the instrument cluster.

7. How much does it cost to repair the P0650 code on a GMC Sierra?

The cost depends on the root cause. Replacing a MIL bulb might cost less than $50, while repairing the instrument cluster or PCM could range from $300 to $1,000.

8. Can a blown fuse cause the P0650 code?

Yes, a blown fuse in the MIL circuit can cause the P0650 code. Check your fuse box for any blown fuses and replace them if necessary.

9. Does the P0650 code affect emissions testing?

Yes, since the MIL may not function correctly, it could cause your vehicle to fail an emissions test, as the check engine light is required to operate as designed.

10. Do I need to replace the PCM if I get a P0650 code?

Not necessarily. The PCM is rarely the primary cause. Rule out simpler issues like a faulty bulb, damaged wiring, or a malfunctioning instrument cluster before considering PCM replacement.

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