EGR Pressure Sensors - What Are They? How Do They Work?

What do they do?

Determine the exact pressure within the EGR system.

How do they work?

EGR pressure sensors measure and compare the ambient air pressure to the positive pressure that should be in a functioning EGR system, verifying proper EGR valve operation.

Where are they located?

Near the EGR valve in the engine compartment.

Symptoms of failure

• Check engine light
• Rough idle
• Engine hesitation
• Poor fuel economy
• Loss of engine power
• Failed emissions test

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