What are the common causes of P245A?

An open in the bank 1 EGR cooler bypass control wire. A failed bank 1 EGR cooler bypass valve. A backed out pin at the bypass valve connector. A missing control module output to the bypass valve.

Command the bank 1 EGR cooler bypass valve with a scan tool. Check continuity of the bypass control wire. Measure the bypass valve solenoid resistance. Inspect the bypass valve connector pins. Replace the bank 1 EGR cooler bypass valve if the control wire is good. Clear the code and retest.

P245A

EGR Cooler Bypass Control Circuit/Open Bank 1

System: Auxiliary emission controls (P code)
Lamp: Check Engine Light
Category: Powertrain - Auxiliary Emissions Controls

What it means

P245A means EGR Cooler Bypass Control Circuit/Open Bank 1.

Check these first

An open in the bank 1 EGR cooler bypass control wire
A failed bank 1 EGR cooler bypass valve
A backed out pin at the bypass valve connector
A missing control module output to the bypass valve

What to do next

Command the bank 1 EGR cooler bypass valve with a scan tool
Check continuity of the bypass control wire
Measure the bypass valve solenoid resistance
Inspect the bypass valve connector pins
Replace the bank 1 EGR cooler bypass valve if the control wire is good
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.