AutoCodes – Lincoln – B1890 Lincoln

B1890 Lincoln Code - PAD Warning Lamp Circuit Short to Battery

Quick Answer

When the ignition is in the ON position, the Passenger Air Bag Deactivation (PAD) indicator prove-out period is initiated by the Restraints Control Module (RCM). Common causes include Faulty Passenger Air Bag Deactivation (PAD) Warning Lamp, PAD Warning Lamp harness is open or shorted, PAD Warning Lamp 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: B1890 Lincoln indicates PAD Warning Lamp Circuit Short to Battery.
Common causes: Common causes include Faulty Passenger Air Bag Deactivation (PAD) Warning Lamp, PAD Warning Lamp harness is open or shorted, PAD Warning Lamp 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 566

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 Jul 12, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1890 Lincoln Description

When the ignition is in the ON position, the Passenger Air Bag Deactivation (PAD) indicator prove-out period is initiated by the Restraints Control Module (RCM). The RCM briefly activates the PAD indicator to verify the occupants correct functional operation of the PAD indicator. For additional information, refer to Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS). If the RCM detects an open or short to ground on the PAD indicator circuit, it will store the Diagnostic Trouble Code (DTC) B1890 in memory and illuminate the air bag warning indicator.

OBDII Code B1890 Lincoln - PAD Warning Lamp Circuit Short to Battery - AutoCodes.com — B1890 Lincoln Code - PAD Warning Lamp Circuit Short to Battery

What does this mean?

What are the Possible Causes of the DTC B1890 Lincoln?

Faulty Passenger Air Bag Deactivation (PAD) Warning Lamp
PAD Warning Lamp harness is open or shorted
PAD Warning Lamp circuit poor electrical connection
Faulty Restraints Control Module (RCM)

How to Fix the DTC B1890 Lincoln?

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 B1890 Lincoln 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 B1890 Lincoln code?

Need more information on how to fix the B1890 Lincoln code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1890 Lincoln 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 B1890 Lincoln Code

1. What are the common symptoms of OBDII code B1890 Lincoln (PAD Warning Lamp Circuit Short to Battery)?

- The common symptoms include the airbag warning light staying illuminated, the airbag system not functioning properly, and potential issues with the passenger airbag.

2. What can cause the OBDII code B1890 Lincoln to trigger?

- The code B1890 can be triggered by a short circuit in the PAD warning lamp circuit, usually caused by damaged wiring, a faulty airbag module, or a malfunctioning passenger airbag deactivation switch.

3. How can I diagnose the OBDII code B1890 Lincoln?

- To diagnose the B1890 code, you will need an OBDII scanner to read the fault codes, as well as a multimeter to test the wiring and components in the PAD warning lamp circuit.

4. Is it safe to drive my vehicle with the OBDII code B1890 Lincoln active?

- It is not recommended to drive the vehicle with the B1890 code active, as it indicates a potential issue with the airbag system, which is a critical safety component in the vehicle.

5. How can I repair the PAD Warning Lamp Circuit Short to Battery issue?

- Repairing the B1890 code may involve inspecting and repairing any damaged wiring in the PAD warning lamp circuit, replacing the airbag module if necessary, or addressing any faults in the passenger airbag deactivation switch.

6. Can I reset the OBDII code B1890 Lincoln by disconnecting the battery?

- Disconnecting the battery may temporarily clear the code, but it is not a recommended long-term solution. It's important to diagnose and repair the underlying issue causing the B1890 code to prevent it from reoccurring.

7. Will the OBDII code B1890 Lincoln affect the overall functionality of the airbag system?

- Yes, the B1890 code indicates a fault in the PAD warning lamp circuit, which is part of the airbag system. It can affect the functionality of the airbag system and compromise passenger safety in the event of a collision.

8. How much does it typically cost to repair the OBDII code B1890 Lincoln?

- The cost of repairing the B1890 code can vary depending on the underlying issue and the labor rates of the repair shop. It's recommended to get a diagnostic done to determine the exact cause and cost of the repair.

9. Can I fix the OBDII code B1890 Lincoln myself, or do I need to take it to a professional mechanic?

- While some DIY enthusiasts may be able to diagnose and repair the B1890 code themselves, dealing with airbag system issues can be complex and dangerous. It's recommended to consult a professional mechanic for proper diagnosis and repair.

10. How long does it typically take to repair the OBDII code B1890 Lincoln?

- The repair time for the B1890 code can vary depending on the underlying issue, availability of parts, and the expertise of the mechanic. It's best to consult with a professional to get an accurate estimate of the repair time.