AutoCodes – Chevrolet – P2511 Chevrolet

P2511 Chevrolet Code - ECM/PCM Power Relay Sense Circuit Intermittent

Quick Answer

The Powertrain Control Module (PCM)/Engine Control Module (ECM) monitors the voltage to the ECM/PCM Power Relay. Common causes include Faulty ECM/PCM Power Relay, ECM/PCM Power Relay harness is open or shorted, ECM/PCM Power 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: P2511 Chevrolet indicates ECM/PCM Power Relay Sense Circuit Intermittent.
Common causes: Common causes include Faulty ECM/PCM Power Relay, ECM/PCM Power Relay harness is open or shorted, ECM/PCM Power 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 1,977

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 17, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2511 Chevrolet Description

The Powertrain Control Module (PCM)/Engine Control Module (ECM) monitors the voltage to the ECM/PCM Power Relay. The ECM/PCM set the OBDII code set when the ECM/PCM Power Relay is out of factory specifications.

OBDII Code P2511 Chevrolet - ECM/PCM Power Relay Sense Circuit Intermittent - AutoCodes.com — P2511 Chevrolet Code - ECM/PCM Power Relay Sense Circuit Intermittent

What does this mean?

What are the Possible Causes of the DTC P2511 Chevrolet?

Faulty ECM/PCM Power Relay
ECM/PCM Power Relay harness is open or shorted
ECM/PCM Power Relay circuit poor electrical connection

How to Fix the DTC P2511 Chevrolet?

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 P2511 Chevrolet 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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Need more information on how to fix the P2511 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2511 Chevrolet 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 P2511 Chevrolet Code

1. What does the OBDII code P2511 mean on a Chevrolet?

P2511 indicates an intermittent issue in the ECM/PCM Power Relay Sense Circuit, meaning the engine control module (ECM) is detecting inconsistent power relay signals.

2. What are the common symptoms of code P2511 in a Chevrolet?

Symptoms include difficulty starting the engine, stalling, reduced engine performance, illuminated check engine light, and intermittent electrical issues.

3. What causes the P2511 code to appear on a Chevrolet?

Common causes include a faulty ECM/PCM power relay, loose or corroded electrical connections, damaged wiring, or a malfunctioning ECM/PCM.

4. Can I drive my Chevrolet with a P2511 code?

Driving with a P2511 code is not recommended, as it can cause inconsistent engine performance or stalling, potentially leading to unsafe driving conditions.

5. How is the P2511 code diagnosed?

A technician will use an OBDII scanner to confirm the code, inspect the power relay and related wiring for damage or corrosion, and test the relayâ€™s functionality.

6. How do you fix the P2511 code on a Chevrolet?

Repairs may include replacing the power relay, repairing or replacing damaged wiring, cleaning corroded connections, or reprogramming or replacing the ECM/PCM if necessary.

7. How much does it cost to fix code P2511 on a Chevrolet?

The cost can vary, but replacing a power relay typically costs $50-$150, while ECM/PCM repairs or replacements can range from $300 to $1,000 or more, depending on the vehicle.

8. Can a weak battery cause the P2511 code in a Chevrolet?

Yes, a weak or failing battery can cause voltage irregularities, which may trigger the P2511 code due to inconsistent power relay signals.

9. Will clearing the P2511 code fix the problem on my Chevrolet?

Clearing the code only resets the check engine light temporarily; the underlying issue must be addressed to prevent the code from returning.

10. Is the P2511 code specific to Chevrolets?

No, the P2511 code is a generic OBDII code that can appear on other vehicle makes, but the troubleshooting and repair process may vary slightly for different brands.