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Engine-Codes – Buick – B1370 Buick

B1370 Buick Code - Control Module Ignition ON and Start Circuit

Quick Answer

The B1370 Buick code refers to an issue with the Control Module Ignition ON and Start Circuit. Common causes include Faulty ignition control module, Wiring or connection issues in the ignition circuit, Defective ignition switch. 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
B1370 Buick indicates Control Module Ignition ON and Start Circuit.
Common causes
Common causes include Faulty ignition control module, Wiring or connection issues in the ignition circuit, Defective ignition switch.
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 12, 2024
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Code B1370 Buick Description

The B1370 Buick code refers to an issue with the Control Module Ignition ON and Start Circuit. This code indicates a problem with the circuit that controls the ignition system when the vehicle is turned on or started. The control module plays a crucial role in managing the ignition process, which is essential for the engine to start and run smoothly. When this circuit malfunctions, it can lead to starting issues, engine performance problems, and potential safety concerns.

OBDII Code B1370 Buick - Control Module Ignition ON and Start Circuit
B1370 Buick Code - Control Module Ignition ON and Start Circuit

Common Causes of B1370 Buick

  1. Faulty ignition control module
  2. Wiring or connection issues in the ignition circuit
  3. Defective ignition switch
  4. Blown fuse related to the ignition system
  5. Corrosion or damage to ignition system components

Symptoms of B1370 Buick

  1. Engine misfires or rough idling
  2. Difficulty starting the engine
  3. Stalling or hesitation during acceleration
  4. Illumination of the Check Engine Light
  5. Reduced fuel efficiency

How to Fix B1370 Buick

  1. Diagnose the issue using a diagnostic scanner to retrieve the trouble codes and perform a thorough inspection of the ignition system components.
  2. Check the wiring and connections related to the ignition ON and start circuit for any signs of damage, corrosion, or loose connections.
  3. Test the ignition control module and ignition switch for proper functionality and replace them if necessary.
  4. Inspect and replace any blown fuses in the ignition system.
  5. Clear the trouble codes, reset the vehicle's computer, and test the vehicle to ensure the issue has been resolved.

Cost to Fix B1370 Buick

The typical repair costs for addressing the B1370 Buick code can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the repair costs for this type of problem can range from $200 to $500, including parts and labor. However, it's important to note that the actual costs may differ based on factors such as the location of the repair shop, the make and model of the vehicle, and the complexity of the repair process. Additionally, diagnostic time and labor rates at auto repair shops can vary, with hourly rates typically falling between $80 and $150. It's recommended to obtain quotes from local repair shops to get a more accurate estimate for addressing the B1370 code.

What does this mean?

Tech Notes for B1370 Buick

B1370:01 Control Module Ignition ON and Start Circuit Short to Battery

B1370:04 Control Module Ignition ON and Start Circuit Short to Ground or Open

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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 B1370 Buick Code

1. What are common symptoms of OBDII code B1370 in a Buick related to the Control Module Ignition ON and Start Circuit?

- Common symptoms include difficulty starting the vehicle, intermittent starting issues, and possible stalling during operation.

2. What are the possible causes of OBDII code B1370 in a Buick?

- The code B1370 can be triggered by a faulty ignition switch, wiring issues in the ignition circuit, or a malfunctioning control module.

3. How can I diagnose the cause of OBDII code B1370 in my Buick?

- To diagnose the issue, you can use a diagnostic scanner to read the code, check the wiring and connections in the ignition circuit, and test the ignition switch and control module for proper function.

4. Is it safe to continue driving my Buick with OBDII code B1370 present?

- It is not recommended to drive the vehicle with code B1370 present, as it can lead to potential starting and stalling problems, risking safety and further damage to the vehicle.

5. Can I repair OBDII code B1370 in my Buick myself?

- Depending on your automotive repair skills, you may be able to repair the issue yourself by addressing the faulty ignition switch, repairing wiring problems, or replacing the control module.

6. How much does it typically cost to repair OBDII code B1370 in a Buick at a dealership?

- The cost of repairing code B1370 at a dealership can vary, but it may include diagnostic fees, parts costs, and labor charges, potentially ranging from a few hundred to over a thousand dollars.

7. Are there any preventive measures to avoid OBDII code B1370 in my Buick?

- Regular maintenance, such as checking and maintaining the ignition system components, can help prevent issues that may trigger code B1370 in your Buick.

8. Can a weak battery or alternator cause OBDII code B1370 in a Buick?

- A weak battery or alternator can indirectly contribute to starting issues that may trigger code B1370, so it's recommended to ensure your electrical system is in good condition.

9. Will resetting the OBDII code B1370 in my Buick make the issue go away?

- Resetting the code may temporarily clear the warning light, but if the underlying issue causing code B1370 is not addressed, the problem is likely to reoccur.

10. How urgent is it to address OBDII code B1370 in my Buick?

- It is advisable to address code B1370 promptly to avoid potential starting and stalling issues that can affect the drivability and safety of your Buick.

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