When does the EGR valve get stuck open?
When does the EGR valve get stuck open?
The Powertrain Control Module (PCM) determines that the EGR valve is stuck open if the actual Exhaust Gas Recirculation (EGR) position and the learned closed EGR position vary by more than a predetermined value. The PCM tests for a stuck valve when the desired EGR position is at 0%.
Is there a way to test a GM EGR valve?
Testing and troubleshooting an EGR valve issue or EGR diagnostic trouble code (DTC) on your GM vehicle is not hard to do. In this article I’ll show you how to do it step-by-step and you won’t even need a scan tool!
What does the p1404 code on a Chevy mean?
On some models, there is a service bulletin for the P1404 code that suggestss reprogramming the Powertrain Control Module (PCM) to repair the problem. The cost to diagnose the P1404 CHEVROLET code is 1.0 hour of labor. The auto repair’s diagnosis time and labor rates vary by location, vehicle’s make and model, and even your engine type.
How many wires are in an EGR valve?
There are 5 wires sticking out of the EGR valve’s connector, in this section we’ll explore what each one does. Most of the EGR valves will have the letters A thru’ E molded onto the EGR valve’s connector. I’ll be using these same letters for the circuit descriptions below: Ground circuit for EGR valve solenoid. Gray with Black stripe wire.
When did GM start using the EGR valve?
The EGR valve that’s covered by this article are for 3.1L, 3.4L, and 3.5L GM vehicles from 2000 to 2009 models years (although some late 1999 models use this type of EGR valve too). To make sure this tutorial applies to your specific vehicle, check this section out first: Identifying The EGR Valve.
What is the closed position of the EGR valve?
While monitoring the Exhaust Gas Recirculation (EGR) valve pintle position the Powertrain Control Module (PCM) detected the closed position sensor voltage higher than the learned closed position voltage.
On some models, there is a service bulletin for the P1404 code that suggestss reprogramming the Powertrain Control Module (PCM) to repair the problem. The cost to diagnose the P1404 CHEVROLET code is 1.0 hour of labor. The auto repair’s diagnosis time and labor rates vary by location, vehicle’s make and model, and even your engine type.
There are 5 wires sticking out of the EGR valve’s connector, in this section we’ll explore what each one does. Most of the EGR valves will have the letters A thru’ E molded onto the EGR valve’s connector. I’ll be using these same letters for the circuit descriptions below: Ground circuit for EGR valve solenoid. Gray with Black stripe wire.
