AutoCodes – Ford – B1310 Ford

B1310 Ford Code - Run/Start Control Circuit Short to Ground or Open

Quick Answer

When the ignition switch is turned to the RUN position, a voltage signal is sent to the Body Control Module (BCM). Common causes include Faulty Ignition Switch, Ignition Switch harness is open or shorted, Ignition Switch 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: B1310 Ford indicates Run/Start Control Circuit Short to Ground or Open.
Common causes: Common causes include Faulty Ignition Switch, Ignition Switch harness is open or shorted, Ignition Switch 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 27,996

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 Nov 29, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1310 Ford Description

When the ignition switch is turned to the RUN position, a voltage signal is sent to the Body Control Module (BCM). The BCM then activates the run/start relay and the run/acc relay, which distribute fused voltage to various components. The run/acc relay is serviced as part of the BCM. the BCM continuously monitors the control side of the run/start relay. This Diagnostic Trouble Code (DTC) sets if the BCM detects an open or a short to ground on the control circuit. The BCM uses a Field-Effect Transistor (FET) to control the run/start relay. When this DTC sets, the control side of the run/start relay is disabled via the FET. Once the condition that caused the DTC to set is repaired, the BCM must pass a self-test in order for the DTC to clear and the system to resume normal operation.

OBDII Code B1310 Ford - Run/Start Control Circuit Short to Ground or Open - AutoCodes.com — B1310 Ford Code - Run/Start Control Circuit Short to Ground or Open

What does this mean?

What are the Possible Causes of the DTC B1310 Ford?

Faulty Ignition Switch
Ignition Switch harness is open or shorted
Ignition Switch circuit poor electrical connection
Faulty Run/Start Relay
Faulty Body Control Module (BCM

How to Fix the DTC B1310 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1310 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.

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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 B1310 Ford Code

1. What are the common symptoms of OBDII code B1310 in a Ford vehicle?

The common symptoms of B1310 include issues with starting the engine, problems with the run/start control circuit, and potential stalling while driving.

2. What does the OBDII code B1310 Ford indicate?

OBDII code B1310 indicates a run/start control circuit short to ground or open in the vehicle's system.

3. What are the possible causes of the B1310 code in a Ford vehicle?

The B1310 code can be caused by damaged wiring in the run/start control circuit, a faulty ignition switch, a defective starter relay, or issues with the starter motor itself.

4. How can I diagnose the B1310 code in my Ford vehicle?

Diagnosing the B1310 code involves using an OBDII scanner to read the code, inspecting the wiring in the run/start control circuit for any damage, testing the ignition switch and starter relay, and checking the starter motor for proper operation.

5. Can I still drive my Ford vehicle with the B1310 code present?

It is not recommended to drive your Ford vehicle with the B1310 code present, as it can lead to starting issues and potential stalling while driving.

6. How serious is the B1310 OBDII code in a Ford vehicle?

The B1310 code should be addressed promptly, as it can cause starting problems and impact the overall drivability of the vehicle.

7. How can I repair the B1310 code in my Ford vehicle?

Repairing the B1310 code may involve repairing or replacing damaged wiring in the run/start control circuit, replacing the ignition switch or starter relay, or addressing any issues with the starter motor.

8. Can I reset the B1310 OBDII code in my Ford vehicle on my own?

You can clear the B1310 code using an OBDII scanner, but it is important to address the underlying issue causing the code to prevent it from reoccurring.

9. Will the B1310 code cause my Ford vehicle to fail an emissions test?

The B1310 code itself may not cause your Ford vehicle to fail an emissions test, but it is indicative of a problem that should be resolved to ensure proper vehicle functionality.

10. How much can I expect to pay to fix the B1310 code in my Ford vehicle?

The cost of fixing the B1310 code can vary depending on the underlying issue and the labor rates in your area. It is recommended to consult with a mechanic for a more accurate estimate.