AutoCodes – Generic – B0018

B0018 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 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 2,927

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 Oct 05, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0018 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 - Passenger Frontal Deployment Loop Voltage Out of Range - AutoCodes.com — B0018 Code - Passenger Frontal Deployment Loop Voltage Out of Range

What does this mean?

What are the Possible Causes of the DTC B0018?

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?

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 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 code?

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

Need Help with the Code?

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

Information for Specific Makes

B0018 Buick — Passenger Frontal Deployment Loop Voltage Out of Range
B0018 Cadillac — Passenger Frontal Deployment Loop Voltage Out of Range
B0018 Chevrolet — Passenger Frontal Deployment Loop Voltage Out of Range
B0018 GMC — Passenger Frontal Deployment Loop Voltage Out of Range
B0018 Pontiac — Passenger Frontal Deployment Loop Voltage Out of Range
B0018 Saturn — Passenger Frontal Deployment Loop Voltage Out of Range

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 Code

1. What are the common symptoms of OBDII code B0018?

The common symptoms of OBDII code B0018 include the airbag warning light illuminating on the dashboard and potential issues with the passenger frontal airbag system.

2. What does the OBDII code B0018 indicate?

OBDII code B0018 indicates a problem with the Passenger Frontal Deployment Loop Voltage being out of range, which can affect the proper functioning of the airbag system.

3. What are the possible causes of OBDII code B0018?

The possible causes of OBDII code B0018 include faulty wiring connections, damaged wiring harness, a malfunctioning airbag control module, or issues with the passenger frontal airbag itself.

4. How can I diagnose the cause of OBDII code B0018?

Diagnosing the cause of OBDII code B0018 requires using a scan tool to retrieve the code, checking the wiring connections, inspecting the wiring harness for damage, and testing the components of the passenger frontal airbag system.

5. Is it safe to drive with OBDII code B0018 present?

It is not recommended to drive with OBDII code B0018 present, as it indicates a potential issue with the passenger frontal airbag system, which may affect its ability to deploy in the event of a crash.

6. Can I reset OBDII code B0018 to see if it comes back?

While you can reset OBDII code B0018 to see if it returns, it is important to diagnose and address the underlying issue causing the code to prevent any safety risks associated with a malfunctioning airbag system.

7. How can I repair OBDII code B0018?

Repairing OBDII code B0018 may involve fixing wiring connections, replacing damaged wiring harness, repairing or replacing the airbag control module, or addressing any issues with the passenger frontal airbag itself.

8. Are there any DIY tips for fixing OBDII code B0018?

DIY tips for fixing OBDII code B0018 include checking and tightening wiring connections, inspecting the wiring harness for damage, and following the manufacturer's repair procedures if a component needs replacement.

9. How much does it cost to repair OBDII code B0018?

The cost to repair OBDII code B0018 can vary depending on the underlying issue causing the code, the cost of parts needed for repair, and labor charges from a mechanic. It is recommended to get a professional diagnosis to determine the exact cost.

10. Can OBDII code B0018 be a recurring issue?

OBDII code B0018 can be a recurring issue if the underlying cause is not properly addressed during the repair process. It is important to diagnose the problem accurately and ensure all necessary repairs are completed to prevent the code from reoccurring.