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P2511: ECM/PCM Power Relay Sense Circuit Intermittent

Severity
Low
System
Powertrain
Last reviewed: Last updated:

Methodology: We combine code standards with complaint and reliability patterns, then review for clear, vehicle-first diagnosis steps.

Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).

Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.

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

Common Causes

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. 1
    Find your vehicle above

    Click your make and model for real owner reports and common causes specific to your vehicle.

  2. 2
    Check for recalls

    Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.

  3. 3
    Get a professional diagnosis

    A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

Related Codes

P2500 Generator Lamp/L-Terminal Circuit Low P2501 Generator Lamp/L-Terminal Circuit High P2502 Charging System Voltage P2503 Charging System Voltage Low P2504 Charging System Voltage High P2505 ECM/PCM Power Input Signal P2506 ECM/PCM Power Input Signal Range/Performance P2507 ECM/PCM Power Input Signal Low P2508 ECM/PCM Power Input Signal High P2509 ECM/PCM Power Input Signal Intermittent