EGR Cooler Bypass Position Sensor Circuit Intermittent/Erratic Bank 1

Where it lives

For P2496, the part to look at first is the sensor named here. The description of P2496 puts it on bank 1.

Check these first

• A loose bank 1 bypass position sensor connector
• An erratic bypass position sensor
• Debris in the bank 1 bypass position sensor connector
• Electrical interference on the position sensor signal

What to do next

1. Read the bank 1 bypass position sensor while wiggling the harness
2. Inspect the position sensor connector for debris or loose pins
3. Command the bypass flap and watch for a steady position signal
4. Check the bank 1 harness for chafe
5. Replace the bypass position sensor if the signal stays erratic
6. Clear the code and retest

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