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2016 ecodiesel P0402 code setc message

TyCrum16

New Member
Apr 2, 2024
1
0
Truck Year
2016
So I have a 2016 ecodiesel showing a p0402 code and a “service electronic throttle control” message I have replaced the egr cooler and valve, cleaned the egr diffuser, and replaced the map sensor. Any ideas what else could be causing these codes?
 

BTdriver

Member
Aug 30, 2018
51
22
Truck Year
2015
Just a guess here but check the throttle butterfly on the front of the intake manifold. If it's not opening up properly, restricting flow of fresh air, that will cause a greater draw from the EGR. Also, check the electrical connectors to it.
 

DaveDickey

New Member
Aug 26, 2023
2
0
Truck Year
2015
Just a guess here but check the throttle butterfly on the front of the intake manifold. If it's not opening up properly, restricting flow of fresh air, that will cause a greater draw from the EGR. Also, check the electrical connectors to it.
I will try that. 2015, 199K, setc, P0402 and P0183. Cleaned MAP twice, MAF twice, EGR tube twice and def nozzle once. Changed air and fuel filters. With codes cleared, it will idle rough until warmed up. No codes except low idle code. Still no pedal. After a few more minutes the pedal starts to work if pressed slowly until stops at 2700 rpm. Will not move. Still no codes. After a few more minutes the setc sets. Pedal is very responsive then up to. 2700 rpm. Will barely crawl. Usually code p0402 sets then and occasionally p0183. If I rev engine up, I will start seeing yellowish/brown smoke coming from tailpipes. ECM was updated Jun 2019 and EGR cooler replaced later. I will try BTdriver's suggestion in a day or 2. Trying to get the Jaguar inspected in case the ED does not get fixed soon. Any other suggestions will be appreciated.
 

h2ohues

New Member
Jun 19, 2024
1
0
Truck Year
2016
I will try that. 2015, 199K, setc, P0402 and P0183. Cleaned MAP twice, MAF twice, EGR tube twice and def nozzle once. Changed air and fuel filters. With codes cleared, it will idle rough until warmed up. No codes except low idle code. Still no pedal. After a few more minutes the pedal starts to work if pressed slowly until stops at 2700 rpm. Will not move. Still no codes. After a few more minutes the setc sets. Pedal is very responsive then up to. 2700 rpm. Will barely crawl. Usually code p0402 sets then and occasionally p0183. If I rev engine up, I will start seeing yellowish/brown smoke coming from tailpipes. ECM was updated Jun 2019 and EGR cooler replaced later. I will try BTdriver's suggestion in a day or 2. Trying to get the Jaguar inspected in case the ED does not get fixed soon. Any other suggestions will be appreciated.
 

DaveDickey

New Member
Aug 26, 2023
2
0
Truck Year
2015
Checked out the intake butterfly. It had a little oil residue and some soot, but seemed to be operating freely. Moving on to fuel filter to test the fuel temp sensor and the EGR flapper.
 

Trey607

New Member
Jun 24, 2024
2
0
Truck Year
2014
Did you already check the solenoid? Check the line to make sure there is vacuum and then the plunger on the EGR cooler to make sure it moves freely.
 

Trey607

New Member
Jun 24, 2024
2
0
Truck Year
2014
You also may have to check the DPF Pressure Sensor. I just returned one as that was my next piece of the puzzle but the EGR valve was my issue.
 
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