What does the code p0400 on the EGR mean?
Code P0400 is triggered when the EGR temperature sensor does not see a temperature change when the EGR is commanded to open. These sensors tend to get a lot of carbon buildup that causes them to lose sensitivity to the heat from the EGR gases.
What does p0400 stand for in engine control module?
All our repairs are backed by our 12-month / 12,000-mile warranty. P0400 is an OBD-II generic code that the engine control module (ECM) detected the engine exhaust gas recirculation (EGR) valve is not flowing recirculated exhaust gases when it is commanded to open the flow of gases into the intake manifold.
Why is the EGR valve on my car not opening?
The EGR valve is not opening due to no vacuum opening the valve from the EGR control solenoid or the EGR not holding vacuum. The EGR temperature sensor is not registering a temperature change when the EGR valve is opened. The EGR passages are blocked and will not allow flow of exhaust gases into the intake manifold.
How to fix the p0400 OBD-II trouble code?
What repairs can fix the P0400 code? 1 Replacing the EGR valve 2 Replacing a broken vacuum line to the EGR valve 3 Replacing an EGR temperature sensor or cleaning the carbon off of it to repair it 4 Cleaning carbon out of EGR tubes to intake manifold
What can cause an EGR valve to fail?
A failed EGR valve can cause the engine to have excessive ignition that can cause internal engine damage to the piston and valves. The Check Engine Light on will cause the vehicle to fail emission testing from excessive NOx gases.
What does a code p0400 on an EGR mean?
A code P0400 may mean that one or more of the following has happened: Plugged EGR passage which restricts the flow of exhaust gasses Faulty EGR solenoid wiring/harness
What is the EGR code for a Mazda Protege se?
Related EGR codes: P0401, P0402, P0403, P0404, P0405, P0406, P0407, P0408, P0409 This is on a 97 Mazda Protege SE, 5sp, 1.5L. I have 2 codes, P1195 and P0400. I have had the P0400 for a little while (it comes and goes for some reason), but just today i put my scanner on again and there was also the P1195.
All our repairs are backed by our 12-month / 12,000-mile warranty. P0400 is an OBD-II generic code that the engine control module (ECM) detected the engine exhaust gas recirculation (EGR) valve is not flowing recirculated exhaust gases when it is commanded to open the flow of gases into the intake manifold.
What repairs can fix the P0400 code? 1 Replacing the EGR valve 2 Replacing a broken vacuum line to the EGR valve 3 Replacing an EGR temperature sensor or cleaning the carbon off of it to repair it 4 Cleaning carbon out of EGR tubes to intake manifold
Why is there an EGR code on my Ford?
However, we often find EGR codes on Ford products caused by inexpensive plastic parts that falsely report position to the control module. Several technical service bulletins for a wide variety of different makes and models have documented different problems associated with the EGR valve system.
Code P0400 is triggered when the EGR temperature sensor does not see a temperature change when the EGR is commanded to open. These sensors tend to get a lot of carbon buildup that causes them to lose sensitivity to the heat from the EGR gases.
What are the symptoms of the p0400 OBD-II trouble code?
The EGR temperature sensor is not registering a temperature change when the EGR valve is opened. The EGR passages are blocked and will not allow flow of exhaust gases into the intake manifold. What are the symptoms of the P0400 code? The Check Engine Light will be illuminated and the code is set in ECM memory.
However, we often find EGR codes on Ford products caused by inexpensive plastic parts that falsely report position to the control module. Several technical service bulletins for a wide variety of different makes and models have documented different problems associated with the EGR valve system.
How to get a quote for a p0400?
Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230. No more waiting rooms! Our mechanics will come to you to diagnose and fix the P0400 code. How can we help? Our service team is available 7 days a week, Monday – Friday from 6 AM to 5 PM PST, Saturday – Sunday 7 AM – 4 PM PST.