AutoCodes – Ford – B0070 Ford

B0070 Ford Code - Driver Seatbelt Pretensioner 'A' Deployment Control

Quick Answer

The Restraints Control Module (RCM) analyzes the deployment loop resistance to determine if a fault exists. Common causes include Faulty Driver Seatbelt Pretensioner 'A', Driver Seatbelt Pretensioner 'A' harness is open or shorted, Driver Seatbelt Pretensioner 'A' 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: B0070 Ford indicates Driver Seatbelt Pretensioner 'A' Deployment Control.
Common causes: Common causes include Faulty Driver Seatbelt Pretensioner 'A', Driver Seatbelt Pretensioner 'A' harness is open or shorted, Driver Seatbelt Pretensioner 'A' 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 24,739

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B0070 Ford Description

The Restraints Control Module (RCM) analyzes the deployment loop resistance to determine if a fault exists. The value displayed in the PID is the deployment loop resistance measured by the RCM. If the value displayed is lower or higher than the desired range, the RCM can set a Diagnostic Trouble Code (DTC). As the deployment loop resistance drifts farther outside the desired range, the chance for a DTC increases. Small variations in resistance can occur due to the effect of road vibrations on terminal fit. Crimps and terminals can be affected by stress and harness movement and can cause an increase in resistance due to wire strain. These variables can result in an intermittent fault. For this reason, the test requires the PID value to be within the desired range before the fault is considered repaired, regardless if the module is reporting an on-demand DTC at the time of diagnosis. Following this direction helps make sure that minor changes in resistance do not create a repeat concern. This test uses the process of elimination to diagnose each part of the deployment loop circuit including:
- Wiring
- Connections
- Driver seatbelt anchor pretensioner
- RCM

OBDII Code B0070 Ford - Driver Seatbelt Pretensioner 'A' Deployment Control - AutoCodes.com — B0070 Ford Code - Driver Seatbelt Pretensioner 'A' Deployment Control

What does this mean?

What are the Possible Causes of the DTC B0070 Ford?

Faulty Driver Seatbelt Pretensioner 'A'
Driver Seatbelt Pretensioner 'A' harness is open or shorted
Driver Seatbelt Pretensioner 'A' circuit poor electrical connection
Faulty Restraints Control Module (RCM)

How to Fix the DTC B0070 Ford?

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 does this mean?

Code Tech Notes

B0070:11 Driver Seatbelt Pretensioner 'A' Deployment Control: Circuit Short to Ground
B0070:12 Driver Seatbelt Pretensioner 'A' Deployment Control: Circuit Short to Battery
B0070:13 Driver Seatbelt Pretensioner 'A' Deployment Control: Circuit Open
B0070:1A Driver Seatbelt Pretensioner 'A' Deployment Control: Circuit Resistance Below Threshold

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0070 Ford 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 B0070 Ford code?

Need more information on how to fix the B0070 Ford code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0070 Ford 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 B0070 Ford Code

1. What are the common symptoms of OBDII code B0070 for the Ford Driver Seatbelt Pretensioner 'A' Deployment Control?

- The common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the driver seatbelt pretensioner system.

2. What are the possible causes of OBDII code B0070 in a Ford vehicle?

- Possible causes of this code include a faulty driver seatbelt pretensioner, damaged wiring or connectors in the system, or issues with the deployment control module.

3. How can I diagnose the OBDII code B0070 related to the Driver Seatbelt Pretensioner 'A' Deployment Control in my Ford?

- Diagnosis typically involves using a diagnostic scanner to read the fault codes, performing visual inspections of the seatbelt pretensioner components, and testing the wiring and connectors for continuity.

4. Is it safe to drive my Ford with OBDII code B0070 for the Driver Seatbelt Pretensioner 'A' Deployment Control?

- It is not recommended to drive the vehicle with this code present, as it may indicate a potential safety issue with the driver seatbelt pretensioner system.

5. How can I repair OBDII code B0070 for the Ford Driver Seatbelt Pretensioner 'A' Deployment Control?

- Repair options may include replacing the faulty driver seatbelt pretensioner, repairing or replacing damaged wiring or connectors, or reprogramming the deployment control module.

6. Can I reset the OBDII code B0070 in my Ford without fixing the underlying issue?

- While you can clear the code temporarily, it is important to address the root cause of the problem to ensure the safety and proper functioning of the driver seatbelt pretensioner system.

7. Are there any recalls or technical service bulletins related to OBDII code B0070 for the Ford Driver Seatbelt Pretensioner 'A' Deployment Control?

- It is advisable to check with your local Ford dealership or visit the manufacturer's website to see if there are any recalls or technical service bulletins related to this specific OBDII code.

8. How much does it typically cost to repair OBDII code B0070 for the Ford Driver Seatbelt Pretensioner 'A' Deployment Control?

- The cost of repair can vary depending on the exact cause of the issue, but it may involve parts and labor expenses ranging from a few hundred to a thousand dollars.

9. Can a DIY enthusiast fix OBDII code B0070 for the Ford Driver Seatbelt Pretensioner 'A' Deployment Control?

- While some basic diagnostic steps can be taken by DIY enthusiasts, repairing or replacing components related to the driver seatbelt pretensioner system may require specialized tools and expertise best handled by a professional mechanic.

10. How often does OBDII code B0070 occur in Ford vehicles, and is it a common issue?

- The frequency of this OBDII code occurrence can vary, but issues with the driver seatbelt pretensioner system leading to code B0070 are not uncommon in Ford vehicles, particularly in older models or those with high mileage.