AutoCodes – GMC – P0616 2016 GMC Sierra

P0616 2016 GMC Sierra Code - Starter Relay Control Circuit Low Voltage

Quick Answer

When the ignition switch is placed in the START position, a discrete signal is supplied to the Body Control Module (BCM) notifying it that the ignition is in the START position. Common causes include Faulty Starter Relay, Starter Relay harness is open or shorted, Starter Relay 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: P0616 2016 GMC Sierra indicates Starter Relay Control Circuit Low Voltage.
Common causes: Common causes include Faulty Starter Relay, Starter Relay harness is open or shorted, Starter Relay 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 538

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jul 15, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0616 2016 GMC Sierra Description

When the ignition switch is placed in the START position, a discrete signal is supplied to the Body Control Module (BCM) notifying it that the ignition is in the START position. The BCM then sends a message to the Engine Control Module (ECM) that a crank has been requested. The ECM then verifies that the clutch pedal is depressed, or the transmission is in Park/Neutral. If it is, the ECM then supplies 12 V to the control circuit of the starter relay. When this occurs, battery voltage is supplied through the switch of the starter relay to the starter solenoid. The Diagnostic Trouble Code (DTC) will be set when the ECM detects improper voltage on the control circuit of the starter relay.

OBDII Code P0616 2016 GMC Sierra - Starter Relay Control Circuit Low Voltage - AutoCodes.com — P0616 2016 GMC Sierra Code - Starter Relay Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0616 2016 GMC Sierra?

Faulty Starter Relay
Starter Relay harness is open or shorted
Starter Relay circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0616 2016 GMC Sierra?

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 P0616 2016 GMC Sierra 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 P0616 2016 GMC Sierra 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 P0616 2016 GMC Sierra Code

What does the OBDII code P0616 mean on a 2016 GMC Sierra?

1. P0616 indicates a low voltage issue in the starter relay control circuit, which can interfere with the proper operation of the starter system. 2.

What are the common symptoms of the P0616 code in a 2016 GMC Sierra?

Symptoms may include difficulty starting the engine, a no-start condition, intermittent starting issues, or the Check Engine Light being illuminated. 3.

What causes the P0616 code to appear on a 2016 GMC Sierra?

Common causes include a faulty starter relay, damaged wiring or connectors in the starter control circuit, a weak battery, or a malfunctioning ignition switch. 4.

How do I diagnose the P0616 code on my 2016 GMC Sierra?

Start by checking the battery voltage, inspecting the starter relay and its wiring for damage or corrosion, and using a multimeter to test for proper voltage at the starter control circuit. 5.

Can a weak battery cause the P0616 code on a 2016 GMC Sierra?

Yes, a weak or failing battery can lead to insufficient voltage in the starter relay control circuit, triggering the P0616 code. 6.

How do I fix the P0616 code on my 2016 GMC Sierra?

Repairs may include replacing a faulty starter relay, repairing damaged wiring or connectors, ensuring proper battery voltage, or addressing issues with the ignition switch. 7.

Is it safe to drive my 2016 GMC Sierra with the P0616 code?

Driving may be possible but not recommended, as the vehicle could fail to start entirely, leaving you stranded. Prompt diagnosis and repair are advised. 8.

Can a faulty ignition switch cause the P0616 code in a 2016 GMC Sierra?

Yes, a malfunctioning ignition switch can disrupt the starter relay control circuit, leading to a low voltage condition and triggering the P0616 code. 9.

How much does it cost to repair the P0616 code on a 2016 GMC Sierra?

Repair costs can range from $50 to $300, depending on whether the issue is with the starter relay, wiring, or other components. Labor costs will vary by location. 10.

Can I clear the P0616 code without fixing the issue on my 2016 GMC Sierra?

Clearing the code without addressing the underlying problem may temporarily remove the Check Engine Light but wonâ€™t resolve the issue, and the code is likely to return.