OBD
P045D
EGR B Control Circuit High
What it means
P045D means EGR B Control Circuit High.
Check these first
- A failed EGR B control solenoid
- A short to voltage on the EGR B control wire
- A chafed EGR B harness touching power
- A poor ground at the EGR valve
- An ECM driver fault
What to do next
- Read the EGR B control voltage on a scan tool
- Check the EGR B control wire for a short to voltage
- Inspect the EGR B harness near power wires
- Verify the EGR valve ground is clean
- Replace the solenoid or repair the shorted wire
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.