AutoCodes – GMC – B0018 GMC

B0018 GMC Code - Passenger Frontal Deployment Loop Voltage Out of Range

Quick Answer

The Inflatable Restraint Instrument Panel (I/P) module deployment loop consists of a dual stage I/P module, I/P module high control, and I/P module low control circuits for both stages 1 and 2. Common causes include Faulty Inflatable Restraint Instrument Panel, Inflatable Restraint Instrument Panel harness is open or shorted, Inflatable Restraint Instrument Panel 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: B0018 GMC indicates Passenger Frontal Deployment Loop Voltage Out of Range.
Common causes: Common causes include Faulty Inflatable Restraint Instrument Panel, Inflatable Restraint Instrument Panel harness is open or shorted, Inflatable Restraint Instrument Panel 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 4,774

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Oct 05, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0018 GMC Description

The Inflatable Restraint Instrument Panel (I/P) module deployment loop consists of a dual stage I/P module, I/P module high control, and I/P module low control circuits for both stages 1 and 2. There are 2 shorting bars used within the I/P module connector which will short together the I/P module high and I/P module low control circuits for both stages 1 and 2 when the connector is disconnected. This will help to prevent unwanted deployment of the inflator module during servicing. When the ignition is turned ON, the inflatable restraint Sensing and Diagnostic Module (SDM) performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. If a malfunction is detected, a Diagnostic Trouble Code (DTC) will be stored in memory.

OBDII Code B0018 GMC - Passenger Frontal Deployment Loop Voltage Out of Range - AutoCodes.com — B0018 GMC Code - Passenger Frontal Deployment Loop Voltage Out of Range

What does this mean?

What are the Possible Causes of the DTC B0018 GMC?

Faulty Inflatable Restraint Instrument Panel
Inflatable Restraint Instrument Panel harness is open or shorted
Inflatable Restraint Instrument Panel circuit poor electrical connection
Faulty Sensing and Diagnostic Module (SDM)

How to Fix the DTC B0018 GMC?

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 B0018 GMC 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.

Need more information about the B0018 GMC code?

Need more information on how to fix the B0018 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0018 GMC code diagnosed by a professional: Find a repair shop in your area

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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 B0018 GMC Code

1. What are the common symptoms of OBDII code B0018 GMC Passenger Frontal Deployment Loop Voltage Out of Range?

The common symptoms include the airbag warning light illuminating on the dashboard and a potential loss of functionality in the passenger frontal airbag system.

2. What are the possible causes of OBDII code B0018 GMC Passenger Frontal Deployment Loop Voltage Out of Range?

Potential causes may include faulty wiring connections, damaged wiring harness, a malfunctioning passenger side airbag module, or issues with the airbag control module.

3. How serious is OBDII code B0018 GMC Passenger Frontal Deployment Loop Voltage Out of Range?

This issue should be addressed promptly as it affects the proper functioning of the passenger frontal airbag system, which is crucial for occupant safety in the event of a collision.

4. Can I continue driving with OBDII code B0018 GMC Passenger Frontal Deployment Loop Voltage Out of Range?

It is not recommended to drive the vehicle with this code present, as the passenger frontal airbag may not deploy properly in case of an accident, potentially increasing the risk of injury.

5. How can I diagnose OBDII code B0018 GMC Passenger Frontal Deployment Loop Voltage Out of Range?

Diagnosis typically involves using a scan tool to retrieve the specific fault code, followed by inspecting the wiring, connections, and components related to the passenger frontal airbag system.

6. What are some repair tips for fixing OBDII code B0018 GMC Passenger Frontal Deployment Loop Voltage Out of Range?

Repair tips may include checking and repairing any damaged wiring, ensuring proper connections, replacing faulty components like the airbag module if necessary, and clearing the fault code.

7. Can I reset OBDII code B0018 GMC Passenger Frontal Deployment Loop Voltage Out of Range myself?

You can attempt to clear the code using an OBDII scanner, but it is crucial to address the underlying issue causing the fault code to prevent it from reoccurring.

8. How much does it cost to repair OBDII code B0018 GMC Passenger Frontal Deployment Loop Voltage Out of Range?

The repair costs can vary depending on the specific cause of the issue, the extent of the damage, and whether any components need replacement. It is advisable to consult a professional for an accurate estimate.

9. Are there any recalls or technical service bulletins related to OBDII code B0018 GMC Passenger Frontal Deployment Loop Voltage Out of Range?

It is recommended to check with the manufacturer or a dealership to inquire about any recalls or technical service bulletins related to this specific OBDII code to see if there are any known issues or remedies.

10. How can I prevent OBDII code B0018 GMC Passenger Frontal Deployment Loop Voltage Out of Range from occurring again?

Regular maintenance checks, timely repairs of any related issues, and ensuring proper installation of any aftermarket components can help prevent the recurrence of this fault code.