AutoCodes – Subaru – P1C08 Subaru

P1C08 Subaru Code - 12V Battery Relay Performance Or Stuck Off

Quick Answer

The Engine Control Module (ECM) monitors the 12V Battery Relay. Common causes include Faulty 12V Battery Relay, 12V Battery Relay harness is open or shorted, 12V Battery Relay 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: P1C08 Subaru indicates 12V Battery Relay Performance Or Stuck Off.
Common causes: Common causes include Faulty 12V Battery Relay, 12V Battery Relay harness is open or shorted, 12V Battery Relay 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 1,713

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 Mar 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1C08 Subaru Description

The Engine Control Module (ECM) monitors the 12V Battery Relay. The ECM sets the OBDII code when the 12V Battery Relay is not to factory specifications.

OBDII Code P1C08 Subaru - 12V Battery Relay Performance Or Stuck Off - AutoCodes.com — P1C08 Subaru Code - 12V Battery Relay Performance Or Stuck Off

What does this mean?

What are the Possible Causes of the DTC P1C08 Subaru?

Faulty 12V Battery Relay
12V Battery Relay harness is open or shorted
12V Battery Relay circuit poor electrical connection

How to Fix the DTC P1C08 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 P1C08 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 P1C08 Subaru code?

Need more information on how to fix the P1C08 Subaru code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1C08 Subaru 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 P1C08 Subaru Code

1. What are the common symptoms of OBDII code P1C08 Subaru (12V Battery Relay Performance Or Stuck Off)?

- Common symptoms include difficulty starting the vehicle, dimming lights, and issues with electrical components.

2. What are the possible causes of OBDII code P1C08 Subaru?

- The code may be triggered by a faulty 12V battery relay, poor electrical connections, or a malfunctioning battery sensor.

3. How can I diagnose the 12V Battery Relay Performance Or Stuck Off code in my Subaru?

- A thorough inspection of the battery relay, battery sensor, and related electrical components using a diagnostic scanner is recommended.

4. Can a DIY enthusiast repair OBDII code P1C08 Subaru?

- While basic troubleshooting like checking connections and replacing the battery relay may be feasible for DIY enthusiasts, complex electrical repairs may require professional assistance.

5. Are there any safety precautions to consider when dealing with this OBDII code?

- It is crucial to disconnect the vehicle's battery before attempting any repairs to avoid the risk of electric shock or damage to the electrical system.

6. How urgent is it to address OBDII code P1C08 Subaru?

- It is important to address the code promptly to prevent potential issues with the vehicle's electrical system and ensure reliable starting and operation.

7. Can a weak car battery trigger OBDII code P1C08 Subaru?

- Yes, a weak or failing car battery can lead to issues with the 12V battery relay, potentially triggering the P1C08 code.

8. What role does the 12V battery relay play in a Subaru vehicle?

- The 12V battery relay is responsible for controlling the flow of electricity from the battery to various electrical components in the vehicle.

9. Are there any specific models of Subaru known to be more prone to OBDII code P1C08?

- While the code can occur in various Subaru models, certain vehicles with electrical system issues or older components may be more susceptible.

10. Is it recommended to reset the OBDII code P1C08 Subaru after repairs?

- Yes, resetting the code using a diagnostic scanner after resolving the underlying issue is advisable to clear the fault code and monitor for any reoccurrence.