AutoCodes – Subaru – B2807 Subaru

B2807 Subaru Code - Engine Control Module Abnormal

Quick Answer

The Diagnostic Trouble Code (DTC) sets when cruise indicator illumination request from Engine Control Module (ECM) and ON/OFF information of cruise function do not match. Common causes include Faulty Engine Control Module (ECM), Engine Control Module (ECM) harness is open or shorted, Engine Control Module (ECM) 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
B2807 Subaru indicates Engine Control Module Abnormal.
Common causes
Common causes include Faulty Engine Control Module (ECM), Engine Control Module (ECM) harness is open or shorted, Engine Control Module (ECM) 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 5,035
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Feb 11, 2020
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Code B2807 Subaru Description

The Diagnostic Trouble Code (DTC) sets when cruise indicator illumination request from Engine Control Module (ECM) and ON/OFF information of cruise function do not match.
OBDII Code B2807 Subaru - Engine Control Module Abnormal - AutoCodes.com
B2807 Subaru Code - Engine Control Module Abnormal

What are the Possible Causes of the DTC B2807 Subaru?

  • Faulty Engine Control Module (ECM)
  • Engine Control Module (ECM) harness is open or shorted
  • Engine Control Module (ECM) circuit poor electrical connection

How to Fix the DTC B2807 Subaru?

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 B2807 Subaru 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 B2807 Subaru code?

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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 B2807 Subaru Code

1. What are the common symptoms of OBDII code B2807 Subaru (Engine Control Module Abnormal)?

- Common symptoms include engine misfires, stalling, rough idling, and a noticeable decrease in engine performance.

2. What are the possible causes of OBDII code B2807 Subaru?

- The code B2807 Subaru can be triggered by a faulty engine control module (ECM), wiring issues, or a problem with the engine's sensors.

3. How can I diagnose OBDII code B2807 Subaru?

- Diagnosing this code typically involves using an OBDII scanner to retrieve the specific fault code, followed by a thorough inspection of the engine control module and related wiring.

4. Can I continue driving with OBDII code B2807 Subaru active?

- It is not recommended to continue driving with this code active, as it can lead to further damage to the engine and potentially unsafe driving conditions.

5. How can I repair OBDII code B2807 Subaru?

- Repairing this code may involve replacing a faulty engine control module, repairing damaged wiring, or addressing issues with the engine's sensors.

6. Are there any DIY tips for fixing OBDII code B2807 Subaru?

- While some basic troubleshooting steps can be taken, diagnosing and repairing this code may require specialized tools and expertise, so it is best to consult a qualified mechanic.

7. Can a low battery voltage trigger OBDII code B2807 Subaru?

- Yes, a low battery voltage can sometimes trigger this code, so it's important to ensure that the battery and charging system are in good condition.

8. Is OBDII code B2807 Subaru a serious issue?

- Yes, this code can indicate underlying problems with the engine control module or other critical components, so it should be addressed promptly to prevent further damage.

9. How much does it typically cost to repair OBDII code B2807 Subaru?

- The cost of repairing this code can vary depending on the specific issue, but it may range from a few hundred to a few thousand dollars, including parts and labor.

10. Can resetting the OBDII code B2807 Subaru make it go away permanently?

- Simply resetting the code may temporarily clear the warning light, but if the underlying issue is not fixed, the code is likely to reappear. It's essential to diagnose and address the root cause of the problem.

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