Engine-CodesBuick – P0616 Buick

P0616 Buick Code - Starter Relay Control Circuit Low Voltage

Quick Answer

The P0616 code for Buick vehicles indicates a problem with the starter relay control circuit experiencing low voltage. Common causes include Faulty starter relay, Corroded or loose electrical connections in the relay circuit, Battery issues, such as low voltage or a weak battery. 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 Buick indicates Starter Relay Control Circuit Low Voltage.
Common causes
Common causes include Faulty starter relay, Corroded or loose electrical connections in the relay circuit, Battery issues, such as low voltage or a weak battery.
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.
Table of contents Created and updated by William Orellana on Aug 25, 2024
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Code P0616 Buick Description

The P0616 code for Buick vehicles indicates a problem with the starter relay control circuit experiencing low voltage. The starter relay is responsible for transmitting electrical current from the battery to the starter motor, which is essential for starting the engine. When the control circuit detects low voltage, it may prevent the starter motor from receiving enough power to engage properly, leading to starting issues or potential stalling while driving.

OBDII Code P0616 Buick - Starter Relay Control Circuit Low Voltage
P0616 Buick Code - Starter Relay Control Circuit Low Voltage

Common Causes of P0616 Buick

  1. Faulty starter relay
  2. Corroded or loose electrical connections in the relay circuit
  3. Battery issues, such as low voltage or a weak battery
  4. Wiring harness damage or short circuits
  5. Faulty ignition switch

Symptoms of P0616 Buick

  1. Intermittent starting issues
  2. Engine cranks slowly or fails to start
  3. Stalling while driving
  4. Illumination of the Check Engine Light

How to Fix P0616 Buick

  1. Begin by checking the battery voltage to ensure it is within the proper range.
  2. Inspect the starter relay and its connections for any signs of damage or corrosion.
  3. Test the relay using a multimeter to determine if it is functioning correctly.
  4. Check the wiring harness for any damage or loose connections.
  5. If necessary, replace the starter relay or repair any damaged wiring.

Cost to Fix P0616 Buick

The cost of repairing a P0616 code for a Buick vehicle can vary depending on the specific cause of the issue. On average, the repair cost for this type of problem can range from $100 to $300, including parts and labor. It's important to consider that diagnostic time and labor rates at auto repair shops can fluctuate based on various factors, so it's advisable to consult with a mechanic for a more accurate estimate.

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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.

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