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Home >> Chevrolet >> 1997 >> C3500 HD 7.4 J, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Controls - Tests W/Codes - 6.5L) >> Diagnostic Trouble Codes >> DTC P1653 - EGR Vent Solenoid Control Circuit >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different variant/trim than selected.

Scan tool has a 5 second ON time. The EGR vent solenoid can be commanded on and off for as many times as needed in 5 second intervals. Other EGR related DTC(s) may set with this DTC. A quick operational check can be made by commanding the EGR vent solenoid on and off with the scan tool while monitoring actual EGR. Actual EGR will display BARO when EGR solenoid is off.

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