P1409 GMC EVR Control Circuit Malfunction
Possible causes
Tech description
The EGR vacuum regulator solenoid resistance is between 26 and 40 ohms.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1409 GMC Description
This test checks the electrical function of the EGRVR solenoid. The test fails when the EGRVR circuit voltage is either too high or too low when compared to the expected voltage range. The EGR system must be enabled for the test to be completed.
GMC Vehicle:GMC Acadia,GMC Canyon,GMC Envoy,GMC Savana 1500,GMC Savana 2500,GMC Savana 3500,GMC Sierra 1500,GMC Sierra 2500 HD,GMC Sierra 3500 HD,GMC Terrain,GMC Yukon,GMC Yukon XL 1500,GMC Yukon XL 2500,