AutoCodes – Lincoln – B1248 Lincoln

B1248 Lincoln Code - Right Rear Turn Indicator Circuit Short To Ground

Quick Answer

The Steering Column Control Module (SCCM) monitors the multifunction switch position. Common causes include Faulty Right Rear Turn Indicator, Right Rear Turn Indicator harness is open or shorted, Right Rear Turn Indicator circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B1248 Lincoln indicates Right Rear Turn Indicator Circuit Short To Ground.
Common causes: Common causes include Faulty Right Rear Turn Indicator, Right Rear Turn Indicator harness is open or shorted, Right Rear Turn Indicator circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 988

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 19, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1248 Lincoln Description

The Steering Column Control Module (SCCM) monitors the multifunction switch position. When the multifunction switch is in the left or right TURN position, the SCCM sends a turn signal switch_status message over the communication network to the Body Control Module (BCM) indicating a request for the left or right turn signal. When the BCM receives a request for a turn signal, the BCM supplies on/off voltage to the appropriate turn lamps.
The timed on/off cycle for turn lamps is determined by the BCM and is set to flash approximately 80 times per minute if both the front and rear turn signal lamps operate correctly. If an individual turn signal lamp is inoperative, the BCM fast flashes the remaining turn lamp approximately 160 times per minute to indicate a bulb outage to the driver. The OBDII sets when the BCM detects the front, rear or exterior mirror turn lamp output is not to factory specifications.

OBDII Code B1248 Lincoln - Right Rear Turn Indicator Circuit Short To Ground - AutoCodes.com — B1248 Lincoln Code - Right Rear Turn Indicator Circuit Short To Ground

What does this mean?

What are the Possible Causes of the DTC B1248 Lincoln?

Faulty Right Rear Turn Indicator
Right Rear Turn Indicator harness is open or shorted
Right Rear Turn Indicator circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1248 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 B1248 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.

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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 B1248 Lincoln Code

1. What does the OBDII code B1248 mean on a Lincoln?

B1248 indicates a short to ground in the right rear turn indicator circuit, meaning there's an electrical issue preventing the turn signal from functioning properly.

2. What are the symptoms of the B1248 code on a Lincoln?

Common symptoms include the right rear turn signal not working, rapid flashing of the turn signal indicator on the dashboard, or the signal staying on constantly.

3. What causes the B1248 code to appear?

The code is typically caused by damaged wiring, a corroded or loose connector, or a faulty bulb socket in the right rear turn signal circuit.

4. Can a blown bulb cause the B1248 code?

While a blown bulb alone wonâ€™t usually cause this specific code, incorrect installation or damage to the bulb socket can contribute to the circuit short.

5. How do I diagnose the B1248 code on my Lincoln?

Inspect the wiring and connectors for damage or corrosion, check the bulb and socket for issues, and use a multimeter to test for continuity and shorts in the circuit.

6. Is it safe to drive with the B1248 code active?

Driving with this code is not recommended, as it can impair turn signal function, potentially causing confusion for other drivers and increasing the risk of accidents.

7. How do you fix the B1248 code on a Lincoln?

Repairs typically involve replacing damaged wiring, repairing or replacing the bulb socket, and ensuring all connectors are clean and secure.

8. Can the B1248 code be cleared without repairs?

Clearing the code without addressing the underlying issue will only result in the code returning. Proper diagnosis and repair are necessary.

9. How much does it cost to fix the B1248 code on a Lincoln?

Repair costs vary depending on the root cause, but replacing damaged wiring or a bulb socket typically costs between $50 and $200, including labor.

10. Can a damaged fuse cause the B1248 code?

A blown fuse might cause related turn signal issues, but the B1248 code specifically points to a short to ground, so the issue is more likely in the wiring or connections.