P068A
ECM/PCM Power Relay De-Energized Performance - Too Early
P068A is an OBD-II diagnostic trouble code meaning: ECM/PCM Power Relay De-Energized Performance - Too Early. Common causes: ecu power relay malfunction (premature shutdown), unstable ecu supply voltage. Estimated repair cost: $6–44.
Symptoms
- Check Engine Light
- Loss of ECU learning data after turning off the ignition
- Unstable engine operation after restart
- Failures in adaptive control systems
- Possible ECU memory errors
Causes
- ECU power relay malfunction (premature shutdown)
- Unstable ECU supply voltage
- Damage to the ECU power supply wiring
- Weak battery
- Internal ECU fault
How to Fix
- Read OBD-II codes and record all errors
- Check battery and generator voltage
- Check the ECU power relay and its control circuit
- Monitor the ECU supply voltage after turning off the ignition with an oscilloscope
- Inspect wiring and connectors for damage
- If the external circuits are in good condition - diagnostics and replacement of the ECU
Related codes
Error P068A by Vehicle Brand
FAQ
What does the P068A code mean?
P068A is an OBD-II diagnostic trouble code that indicates: ECM/PCM Power Relay De-Energized Performance - Too Early
What causes a P068A error code?
The most common causes of P068A include: ECU power relay malfunction (premature shutdown); Unstable ECU supply voltage; Damage to the ECU power supply wiring; Weak battery.
How do I fix a P068A diagnostic trouble code?
To fix P068A: Read OBD-II codes and record all errors. Check battery and generator voltage. Check the ECU power relay and its control circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P068A?
Limited driving only, diagnose soon
How much does it cost to fix P068A?
The estimated repair cost for P068A is $6–44. Actual cost depends on your vehicle, location, and labor rates.
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