When you are trying to determine the cause of a Chevrolet Code P1404, it is essential to understand the definition and description of the issue. This code is related to the Exhaust Gas Recirculation (EGR) Solenoid 2 and is triggered when the Engine Control Temperature (ECT) sensor and the Heated Oxygen Sensor (HO2S) reach specific readings. Understanding the cause of this code, and the related service bulletins, is essential in order to diagnose and repair the issue. Chevrolet Code P1404 can be caused by several factors, including a clogged or restricted EGR tube or EGR valve or an open or shorted to-ground EGR Solenoid 2 control circuit.
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Causes and Solutions of Chevrolet Code P1404
| Causes | Solutions |
|---|---|
| Clogged or restricted EGR tube | Clean or replace the EGR tube |
| Sticking EGR valve | Replace EGR valve |
| Open or shorted to ground EGR Solenoid 2 control circuit | Repair or replace EGR solenoid 2 |
| Malfunctioning Engine Control Temperature (ECT) sensor | Replace ECT sensor |
Clogged or Restricted EGR Tube
The EGR tube controls the air-to-fuel ratio in the engine and keeps the exhaust gases from entering the engine. If the EGR tube is clogged or restricted, it can lead to a Chevrolet Code P1404. The solution to this is to clean or replace the EGR tube.
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Sticking EGR Valve
The EGR valve works to recirculate exhaust gases back into the engine. If the EGR valve is sticking, it can cause Chevrolet Code P1404. The solution to this is to replace the EGR valve.
Open or Shorted to Ground EGR Solenoid 2 Control Circuit
The EGR Solenoid 2 is responsible for controlling the amount of exhaust gases that are recirculated back into the engine. If the EGR Solenoid 2 control circuit is open or shorted to the ground, it can lead to a Chevrolet Code P1404. The solution to this is to repair or replace the EGR solenoid 2.
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Malfunctioning Engine Control Temperature (ECT) Sensor
The ECT sensor is responsible for measuring the coolant temperature in the engine. If the ECT sensor is malfunctioning, it can lead to a Chevrolet Code P1404. The solution to this is to replace the ECT sensor.
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Conclusion: The Causes and Solutions of Chevrolet Code P1404
The Chevrolet Code P1404 can be caused by several different factors, including a clogged or restricted EGR tube, a sticking EGR valve, an open or shorted to-ground EGR Solenoid 2 control circuit, or a malfunctioning Engine Control Temperature (ECT) sensor. The solutions to these causes are cleaning or replacing the EGR tube, replacing the EGR valve, repairing or replacing the EGR solenoid 2, or replacing the ECT sensor. Understanding the causes and solutions of Chevrolet Code P1404 makes it possible to diagnose and repair the issue.