B1372 Buick Code - Device Ignition On and Start Circuit Low
Quick Answer
The B1372 diagnostic trouble code (DTC) for Buick vehicles indicates a problem with the ignition on and start circuit being lower than the expected voltage level. Common causes include Faulty ignition switch, Wiring issues such as shorts or open circuits, Damaged connectors or terminals. 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
- B1372 Buick indicates Device Ignition On and Start Circuit Low.
- Common causes
- Common causes include Faulty ignition switch, Wiring issues such as shorts or open circuits, Damaged connectors or terminals.
- 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 B1372 Buick Description
The B1372 diagnostic trouble code (DTC) for Buick vehicles indicates a problem with the ignition on and start circuit being lower than the expected voltage level. This issue can affect the vehicle's ability to start properly and may lead to other electrical malfunctions. The ignition on and start circuit is crucial for initiating the starting process of the engine, and a low voltage in this circuit can prevent the engine from starting or cause intermittent starting problems.
Common Causes of B1372 Buick
- Faulty ignition switch
- Wiring issues such as shorts or open circuits
- Damaged connectors or terminals
- Malfunctioning Engine Control Module (ECM)
- Corrosion or poor connections in the circuit
Symptoms of B1372 Buick
- Difficulty starting the engine
- Intermittent starting issues
- Engine stalling or shutting off unexpectedly
- Illumination of the Check Engine Light
- Loss of power or acceleration
How to Fix B1372 Buick
- Begin by checking the wiring harness for any visible damage or corrosion. Repair or replace any damaged wires.
- Inspect the connectors and terminals in the ignition on and start circuit for corrosion or poor connections. Clean or replace as necessary.
- Test the ignition switch for proper functionality using a multimeter. Replace the ignition switch if it is found to be faulty.
- If the issue persists, perform a diagnostic scan using a professional diagnostic tool to pinpoint the exact cause of the low voltage in the ignition on and start circuit.
- Finally, clear the DTC and test the vehicle to ensure that the issue has been resolved.
Cost to Fix B1372 Buick
The typical repair costs for addressing the B1372 code can vary depending on the specific cause of the issue. In general, the cost of parts such as an ignition switch or wiring harness repair kit can range from $50 to $200. Labor costs at auto repair shops typically range from $80 to $150 per hour. The total cost of repairs for this issue may range from $150 to $500, depending on the extent of the problem and the specific repairs needed. It's advisable to consult with a qualified mechanic to get an accurate estimate based on your vehicle's make and model.
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Frequently Asked Questions about B1372 Buick Code
1. What does the OBDII code B1372 mean on a Buick?
The code B1372 indicates an issue with the "Device Ignition On and Start Circuit Low," meaning the voltage in the ignition circuit is lower than expected.
2. What are the common symptoms of code B1372 in a Buick?
Common symptoms include failure to start, intermittent starting issues, or warning lights on the dashboard.
3. What causes the B1372 code to appear in a Buick?
This code can be caused by a faulty ignition switch, damaged wiring, a weak battery, or a malfunctioning control module.
4. Can a dead battery trigger the B1372 code in a Buick?
Yes, a weak or dead battery can cause low voltage in the ignition circuit, potentially triggering this code.
5. How do I fix the B1372 code on my Buick?
Inspect the ignition switch, check the wiring for damage, ensure the battery is fully charged, and replace any faulty components.
6. Is the B1372 code related to a specific Buick model?
No, this code can appear on various Buick models equipped with OBDII systems, as it pertains to a general ignition circuit issue.
7. Can I drive my Buick with the B1372 code active?
Driving with this code is risky, as the vehicle may fail to start or experience electrical issues. It’s best to address the problem promptly.
8. What tools are needed to diagnose the B1372 code in a Buick?
You’ll need a scan tool or OBDII reader, a multimeter to check voltage, and basic tools for inspecting the ignition circuit.
9. How much does it cost to repair the B1372 code on a Buick?
The cost varies depending on the cause. Replacing an ignition switch or repairing wiring can range from $100 to $300, while more extensive repairs may cost more.
10. Can a faulty ignition relay cause the B1372 code in a Buick?
Yes, a malfunctioning ignition relay can disrupt the circuit and cause the voltage to drop, triggering the code.
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