P1653 BUICK, CADILLAC, CHEVROLET, GMC: EGR VENT SOLENOID CONTROL CIRCUIT CONDITIONS
POST UPDATED IN February, 2023
P1653 BUICK, CADILLAC, CHEVROLET, GMC: EGR VENT SOLENOID CONTROL CIRCUIT CONDITIONS
Using the EGR System (Exhaust Gas Recirculation) it is possible to increase fuel efficiency as well as improve engine emissions. To achieve this, the system reintroduces the air-fuel mixture, which, despite going through combustion, was not burned completely.
The exhaust gas recirculation system includes a valve known by the same name, which is controlled by vacuum solenoids and electric solenoids. The function of the ventilation solenoid is basically to expel the amount of unnecessary air into the exhaust system after it passes through the catalytic converter.
The DTC P1653 OBDII code is set by the PCM (Powertrain Control Module) when, with the ignition key on or the engine running, tests are performed on the vent solenoid, and these checks reveal that the voltage in the vent solenoid control circuit was high (12v), or with the requested vent solenoid off, the solenoid control circuit voltage was close to 0v.
P1653 OBD2 diagnostic code is set by one of the following factors:
The corresponding steps to resolve the P1653 OBDII fault code are: