AutoCodes – Lincoln – C1250 Lincoln

C1250 Lincoln Code - Left Rear ISO Valve Circuit Failure

Quick Answer

The Anti-Lock Brake System (ABS) Module monitors the Left Rear ISO Valve. Common causes include Faulty Left Rear ISO Valve, Left Rear ISO Valve harness is open or shorted, Left Rear ISO Valve 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: C1250 Lincoln indicates Left Rear ISO Valve Circuit Failure.
Common causes: Common causes include Faulty Left Rear ISO Valve, Left Rear ISO Valve harness is open or shorted, Left Rear ISO Valve 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 1,026

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 Aug 30, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1250 Lincoln Description

The Anti-Lock Brake System (ABS) Module monitors the Left Rear ISO Valve. The ABS Module sets the OBDII code when the Left Rear ISO Valve is not to factory specifications.

OBDII Code C1250 Lincoln - Left Rear ISO Valve Circuit Failure - AutoCodes.com — C1250 Lincoln Code - Left Rear ISO Valve Circuit Failure

What does this mean?

What are the Possible Causes of the DTC C1250 Lincoln?

Faulty Left Rear ISO Valve
Left Rear ISO Valve harness is open or shorted
Left Rear ISO Valve circuit poor electrical connection

How to Fix the DTC C1250 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 C1250 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 C1250 Lincoln code?

Need more information on how to fix the C1250 Lincoln code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1250 Lincoln code diagnosed by a professional: Find a repair shop in your area

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 C1250 Lincoln Code

1. What are the common symptoms of OBDII code C1250 in a Lincoln vehicle?

- Common symptoms include the illumination of the ABS warning light on the dashboard, potential loss of ABS functionality, and issues with the vehicle's stability control system.

2. What does the OBDII code C1250 Lincoln indicate?

- The code C1250 indicates a Left Rear ISO Valve Circuit Failure in the vehicle's anti-lock braking system (ABS).

3. What are the possible causes of OBDII code C1250 in a Lincoln?

- The code C1250 can be triggered by a faulty left rear ISO valve, damaged wiring or connectors in the circuit, or issues with the ABS control module.

4. How can I diagnose the cause of OBDII code C1250 in my Lincoln?

- Diagnosing the code C1250 may involve checking the wiring and connectors related to the left rear ISO valve, testing the valve itself for proper function, and inspecting the ABS control module for any faults.

5. Can I continue driving my Lincoln with OBDII code C1250 present?

- It is not recommended to drive the vehicle with code C1250 active, as it may affect the ABS functionality and compromise the vehicle's safety on the road.

6. How can I repair OBDII code C1250 Left Rear ISO Valve Circuit Failure in my Lincoln?

- Repairing the code C1250 may involve replacing the left rear ISO valve, repairing or replacing damaged wiring or connectors, and resetting the ABS system using a diagnostic tool.

7. Is it possible to clear OBDII code C1250 in a Lincoln without fixing the issue?

- Clearing the code without addressing the underlying problem may temporarily turn off the warning light, but the issue will likely reoccur until the root cause is resolved.

8. Can a DIY enthusiast fix OBDII code C1250 in a Lincoln?

- Depending on your technical skills and access to tools, it may be possible to address code C1250 yourself by following repair guides or consulting with automotive experts.

9. How much does it typically cost to repair OBDII code C1250 in a Lincoln?

- The cost of repairing code C1250 can vary based on the specific cause of the issue, but it may involve expenses for parts, labor, and diagnostic services from a professional mechanic.

10. How often does OBDII code C1250 Left Rear ISO Valve Circuit Failure occur in Lincoln vehicles?

- The occurrence of code C1250 can vary among Lincoln vehicles, but it is a relatively common issue related to the ABS system that may require attention to ensure safe driving conditions.