P2511 — ECM/PCM Power Relay Sense Circuit Intermittent

What Does P2511 Mean?

P2511 is a diagnostic trouble code indicating: ECM/PCM Power Relay Sense Circuit Intermittent. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P2511

⚠️ Check Engine Light (MIL) illuminated
⚠️ ECM/PCM Power Relay Sense signal cutting in and out
⚠️ Related system working sometimes but not consistently
⚠️ Reduced engine performance

Common Causes

🔍 Loose or intermittent connection at ECM/PCM Power Relay Sense
🔍 Wire chafing causing intermittent contact
🔍 ECM/PCM Power Relay Sense failing under heat or vibration
🔍 Corroded connector pins with partial contact

Frequently Asked Questions

What does P2511 mean?

P2511 indicates: ECM/PCM Power Relay Sense Circuit Intermittent. The vehicle's computer has detected that the ECM/PCM Power Relay Sense is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P2511?

Yes, P2511 is generally safe to drive with in the short term. However, it should still be addressed to pass emissions testing and prevent potential secondary issues.

How much does it cost to fix P2511?

Repair costs for P2511 typically range from $30 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect and reseat all ECM/PCM Power Relay Sense connectors
🔧 Repair chafed or damaged wiring in ECM/PCM Power Relay Sense circuit
🔧 Replace ECM/PCM Power Relay Sense if failing intermittently

1
Find your vehicle above
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P2511: ECM/PCM Power Relay Sense Circuit Intermittent