A/C Power Supply Relay Control Circuit High

Where it lives

For P0EC8, the circuit described runs through the relay. The description of P0EC8 reports a fault at the relay.

Check these first

• A short to voltage on the A/C power supply relay control wire
• A failed A/C power supply relay
• A control module holding the relay coil energized
• Chafed wiring in the relay control circuit

What to do next

1. Read A/C power supply relay control state on a scan tool
2. Test the relay control wire for a short to voltage
3. Check the A/C power supply relay by swapping a known good unit
4. Verify the control module output at the relay connector
5. Replace the A/C power supply relay if the control tests good
6. Clear the code and retest

Look up another code