AutoCodes – Chevrolet – B2472 Chevrolet

B2472 Chevrolet Code - Low Beam Output Fault

Quick Answer

Low beams are commanded by Platform Zone Module (PZM) through an output to headlight relay. Common causes include Faulty Headlight Switch, Headlight Switch harness is open or shorted, Headlight Switch 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: B2472 Chevrolet indicates Low Beam Output Fault.
Common causes: Common causes include Faulty Headlight Switch, Headlight Switch harness is open or shorted, Headlight Switch 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.

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Code Popularity 683

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Dec 09, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2472 Chevrolet Description

Low beams are commanded by Platform Zone Module (PZM) through an output to headlight relay. When the output is grounded, headlight input to IPC is also grounded.
A short to ground will be tested when exterior lights power is active, low beam output is inactive, headlight switch is not active, and Diagnostic Trouble Code (DTC) B1970 is not set as current. A short to the battery will be tested when exterior lights power is active, low beam output is active, and DTC B1970 is not set as current.
DTC B2472 will set when commanded state of low beams does not match the feedback state. When DTC B2472 is set, PZM will continue to command the state requested until IPC revokes request. DTC B2472 will clear when the commanded state matches the feedback state.

OBDII Code B2472 Chevrolet - Low Beam Output Fault - AutoCodes.com — B2472 Chevrolet Code - Low Beam Output Fault

What does this mean?

What are the Possible Causes of the DTC B2472 Chevrolet?

Faulty Headlight Switch
Headlight Switch harness is open or shorted
Headlight Switch circuit poor electrical connection
Faulty Headlight Relay
Faulty Platform Zone Module (PZM)

How to Fix the DTC B2472 Chevrolet?

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 B2472 Chevrolet 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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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 B2472 Chevrolet Code

1. What are the common symptoms of OBDII code B2472 Chevrolet (Low Beam Output Fault)?

- Dim or flickering low beam headlights, complete loss of low beam headlight function, and warning light on the dashboard are common symptoms.

2. What are the possible causes of OBDII code B2472 Chevrolet (Low Beam Output Fault)?

- The code can be triggered by a faulty headlight bulb, damaged wiring, a defective headlight control module, or a problem with the vehicle's electrical system.

3. How can I diagnose the cause of OBDII code B2472 Chevrolet (Low Beam Output Fault)?

- Start by checking the low beam headlight bulbs for any signs of damage or wear. Inspect the wiring harness for any visible damage, and use a multimeter to test for continuity. If the bulbs and wiring are fine, the issue may lie with the headlight control module or vehicle's electrical system.

4. Can I repair OBDII code B2472 Chevrolet (Low Beam Output Fault) on my own?

- Depending on the cause of the issue, you may be able to repair it on your own. Replacing a faulty headlight bulb or repairing damaged wiring can be done by following the vehicle's repair manual. However, more complex issues with the headlight control module or electrical system may require professional assistance.

5. Are there any temporary fixes for OBDII code B2472 Chevrolet (Low Beam Output Fault)?

- While temporary fixes may vary depending on the specific cause of the issue, you can try swapping the low beam headlight bulbs from one side to the other to see if the problem follows the bulb. Additionally, checking and securing any loose wiring connections may provide a temporary solution.

6. What should I do if the OBDII code B2472 Chevrolet (Low Beam Output Fault) persists after making repairs?

- If the issue persists after repairing or replacing the headlight bulbs, wiring, or control module, it is recommended to have the vehicle inspected by a qualified technician. They can perform more in-depth diagnostics to pinpoint the exact cause of the problem.

7. Can OBDII code B2472 Chevrolet (Low Beam Output Fault) affect other vehicle systems?

- While the code specifically relates to low beam headlight output, electrical issues within the vehicle can sometimes have secondary effects on other systems. It is essential to address the fault promptly to prevent any potential complications.

8. How can I prevent OBDII code B2472 Chevrolet (Low Beam Output Fault) from occurring?

- Regularly inspecting and maintaining the vehicle's headlights, wiring, and electrical components can help prevent the occurrence of this fault. If you notice any dimness or flickering in the headlights, address the issue promptly to avoid triggering the fault code.

9. Is OBDII code B2472 Chevrolet (Low Beam Output Fault) a serious issue?

- While the fault may not directly impact the drivability of the vehicle, having malfunctioning low beam headlights can compromise visibility and safety, especially in low-light conditions. It is important to address the issue promptly to ensure optimal vehicle lighting performance.

10. How long does it typically take to repair OBDII code B2472 Chevrolet (Low Beam Output Fault)?

- The repair time for this fault can vary depending on the cause of the issue and the complexity of the repair. Simple fixes like replacing a headlight bulb can be done relatively quickly, while diagnosing and resolving more intricate electrical problems may take longer and require professional expertise.