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P068B: ECM/PCM Power Relay De-Energized Performance - Too Late

Severity
Medium
System
Computer and Output Circuits

What Does P068B Mean?

P068B is a diagnostic trouble code indicating: ECM/PCM Power Relay De-Energized Performance - Too Late. This code relates to the computer and output circuits system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P068B

Common Causes

Frequently Asked Questions

What does P068B mean?
P068B indicates: ECM/PCM Power Relay De-Energized Performance - Too Late. The vehicle's computer has detected that the ECM/PCM Power Relay De-Energized is not operating within its expected parameters and stored this diagnostic trouble code.
Can I drive with code P068B?
You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P068B for extended periods may cause additional problems.
How much does it cost to fix P068B?
Repair costs for P068B typically range from $50 to $400, 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 ECM/PCM Power Relay De-Energized for contamination or wear
  • 🔧 Replace ECM/PCM Power Relay De-Energized
  • 🔧 Address any related mechanical faults
  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

P0600 Serial Communication Link P0601 Internal Control Module Memory Checksum Error P0602 Control Module Programming Error P0603 Internal Control Module Keep Alive Memory (KAM) Error P0604 Internal Control Module RAM Error P0605 Internal Control Module Read Only Memory (ROM) Error P0606 Control Module Processor P0607 Control Module Performance P0608 Control Module VSS Output A P0609 Control Module VSS Output B