Engine-CodesBuick – P1376 Buick

P1376 Buick Code - Ignition Ground Circuit

Quick Answer

The P1376 Buick code relates to an issue with the ignition ground circuit in the vehicle. Common causes include Faulty ignition coil, Loose or corroded ground connections, Damaged wiring or connectors in the ignition system. 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
P1376 Buick indicates Ignition Ground Circuit.
Common causes
Common causes include Faulty ignition coil, Loose or corroded ground connections, Damaged wiring or connectors in the ignition system.
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 Sep 10, 2024
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Code P1376 Buick Description

The P1376 Buick code relates to an issue with the ignition ground circuit in the vehicle. The ignition system is a crucial component that is responsible for creating the spark needed to ignite the air-fuel mixture in the engine's cylinders. The ground circuit plays a vital role in ensuring that the ignition system functions properly by providing a path for the electrical current to flow back to the battery.

OBDII Code P1376 Buick - Ignition Ground Circuit
P1376 Buick Code - Ignition Ground Circuit

Common Causes of P1376 Buick

  1. Faulty ignition coil
  2. Loose or corroded ground connections
  3. Damaged wiring or connectors in the ignition system
  4. Issues with the ignition control module
  5. Electrical problems within the vehicle's system

Symptoms of P1376 Buick

  1. Engine misfires
  2. Rough idling
  3. Difficulty starting the vehicle
  4. Decreased fuel efficiency
  5. Increased emissions

How to Fix P1376 Buick

  1. Inspect and test the ignition coil to ensure it is functioning correctly.
  2. Check all ground connections for tightness and corrosion, cleaning or tightening them as needed.
  3. Inspect the wiring and connectors in the ignition system for any damage or wear, replacing them if necessary.
  4. Test the ignition control module to determine if it is the source of the issue, replacing it if faulty.
  5. Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1376 Buick

The cost of repairing the ignition ground circuit can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay anywhere from $150 to $500 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's best to check with local shops 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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