P0616 2018 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 2018 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.
Code P0616 2018 GMC Sierra Description
What are the Possible Causes of the DTC P0616 2018 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 2018 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 2018 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.
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Frequently Asked Questions about P0616 2018 GMC Sierra Code
What does the OBDII code P0616 mean on a 2018 GMC Sierra?
The P0616 code indicates a "Starter Relay Control Circuit Low Voltage," meaning the Powertrain Control Module (PCM) has detected insufficient voltage in the starter relay control circuit.
What are the common symptoms of a P0616 code on a 2018 GMC Sierra?
Symptoms may include the engine not cranking, intermittent starting issues, a check engine light, or no response when turning the ignition key or pressing the start button.
What causes the P0616 code to appear on a 2018 GMC Sierra?
Potential causes include a faulty starter relay, damaged wiring or connectors in the starter circuit, a weak or dead battery, a bad ignition switch, or a malfunctioning PCM.
Can a weak battery cause the P0616 code on a 2018 GMC Sierra?
Yes, a weak or discharged battery can contribute to the P0616 code by failing to supply adequate voltage to the starter relay circuit.
How do I diagnose the P0616 code on my 2018 GMC Sierra?
Start by checking the battery voltage, inspecting the starter relay and its connections, and visually examining the wiring for damage. Use a multimeter to test for proper voltage in the starter relay control circuit.
Can I drive my 2018 GMC Sierra with a P0616 code?
Driving may not be possible if the engine cannot start. If the engine does start, continued driving is not recommended as the problem could worsen or leave you stranded.
How do I fix the P0616 code on a 2018 GMC Sierra?
Possible fixes include replacing a faulty starter relay, repairing damaged wiring, ensuring proper battery voltage, and addressing PCM issues if all other components are functional.
Does the P0616 code mean the starter motor is bad?
Not necessarily. The code specifically points to the starter relay control circuit, not the starter motor itself. However, a faulty starter motor could indirectly contribute to the issue.
How much does it cost to repair a P0616 code on a 2018 GMC Sierra?
Repair costs vary depending on the issue. Replacing a starter relay typically costs $50–$150, while repairing wiring could cost $100–$300. PCM-related repairs or replacements may be more expensive.
Can a P0616 code clear itself on a 2018 GMC Sierra?
The code may clear if the issue is intermittent and resolves temporarily, but the root cause should still be addressed to prevent recurrence.
Discuss the causes and fixes for P0616 2018 GMC Sierra OBDII Code
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