AutoCodes – Mazda – P2508 Mazda

P2508 Mazda Code - ECM/PCM Power Input Signal High

Quick Answer

When the ignition switch is turned "ON", the battery voltage is applied from the battery to the Powertrain Control Module (PCM)/Engine Control Module (ECM) through the main relay. Common causes include Low battery voltage, Faulty Powertrain Control Module (PCM)/Engine Control Module (ECM), ECM/PCM harness is open or shorted. 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: P2508 Mazda indicates ECM/PCM Power Input Signal High.
Common causes: Common causes include Low battery voltage, Faulty Powertrain Control Module (PCM)/Engine Control Module (ECM), ECM/PCM harness is open or shorted.
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 1,672

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 Jan 16, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2508 Mazda Description

When the ignition switch is turned "ON", the battery voltage is applied from the battery to the Powertrain Control Module (PCM)/Engine Control Module (ECM) through the main relay. In case that the ignition switch is turned "OFF", the ECM/PCM is supplied with power through the battery power input line to control the basic operation of the vehicle. The ECM/PCM set the OBDII code when the ECM/PCM Power Input is out of factory specifications.

OBDII Code P2508 Mazda - ECM/PCM Power Input Signal High - AutoCodes.com — P2508 Mazda Code - ECM/PCM Power Input Signal High

What does this mean?

What are the Possible Causes of the DTC P2508 Mazda?

Low battery voltage
Faulty Powertrain Control Module (PCM)/Engine Control Module (ECM)
ECM/PCM harness is open or shorted
ECM/PCM circuit poor electrical connection

How to Fix the DTC P2508 Mazda?

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 P2508 Mazda 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 P2508 Mazda code?

Need more information on how to fix the P2508 Mazda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2508 Mazda 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 P2508 Mazda Code

1. What are the common symptoms of OBDII code P2508 in a Mazda?

The common symptoms of OBDII code P2508 in a Mazda include illuminated Check Engine Light, engine stalling or rough idling, and issues with starting the vehicle.

2. What does the OBDII code P2508 ECM/PCM Power Input Signal High mean for a Mazda?

The OBDII code P2508 indicates that the Engine Control Module (ECM) or Powertrain Control Module (PCM) is detecting a high voltage signal from the power input circuit.

3. What are the possible causes of OBDII code P2508 in a Mazda?

Possible causes of OBDII code P2508 in a Mazda include a faulty ECM/PCM power input circuit, damaged wiring or connectors, a defective ECM/PCM, or a weak battery or charging system.

4. How can I diagnose OBDII code P2508 in my Mazda?

Diagnosing OBDII code P2508 in a Mazda involves using a diagnostic scanner to retrieve the code, inspecting the power input circuit for damage, checking the battery and charging system, and testing the ECM/PCM for proper functioning.

5. Can I drive my Mazda with OBDII code P2508 ECM/PCM Power Input Signal High?

It is not recommended to drive your Mazda with OBDII code P2508 present, as it can lead to potential engine performance issues and further damage if left unresolved.

6. How do I repair OBDII code P2508 in my Mazda?

Repairing OBDII code P2508 in a Mazda may involve repairing or replacing damaged wiring or connectors, testing and replacing the ECM/PCM if necessary, and ensuring the battery and charging system are functioning properly.

7. Will resetting the ECM clear OBDII code P2508 in a Mazda?

Resetting the ECM may temporarily clear OBDII code P2508, but if the underlying issue causing the high power input signal is not addressed, the code is likely to return.

8. Can a DIY enthusiast fix OBDII code P2508 in a Mazda?

A DIY enthusiast with automotive repair experience and the necessary tools may be able to diagnose and repair OBDII code P2508 in a Mazda, but complex electrical issues may require professional assistance.

9. How much does it cost to fix OBDII code P2508 in a Mazda?

The cost to fix OBDII code P2508 in a Mazda can vary depending on the exact cause of the issue, parts needed for repair, and whether professional labor is required. It is advisable to obtain quotes from qualified mechanics.

10. How can I prevent OBDII code P2508 in my Mazda?

To prevent OBDII code P2508 in your Mazda, it is important to perform regular vehicle maintenance, address any electrical issues promptly, and ensure the battery and charging system are in good condition.