2009 ML 320 Bluetec persistent fault code 14A600, lack of power
03-14-2021, 05:44 PM
#1
Junior Member
Thread Starter
2009 ML 320 Bluetec persistent fault code 14A600, lack of power
Hi, anybody encounter this problem? fault code 14A600 - positive control deviation of exhaust gas recirculation control is too high. The engine has excellent idling, start quickly and no smoke at tail pipe but unable to rev over 3000 rpm. No other fault code appearing. I already replaced the two orange seal at turbo inlet and PCV inlet on the clean air Y-pipe then smoke test the entire inlet from engine air filter to the intercooler outlet but no leak was detected in and outlet pipe of the turbo. Removed and cleaned EGR valve not much soot found, inspected the internal corrugated EGR pipe, no deformation or obstructions found, remove the EGR pipe from EGR cooler outlet and found it was clogged, removed the harden soot from the pipe, blow compressed air to the EGR cooler and pipe. I thought this was the only problem but when I test drive the SUV the fault code had come back again. I Checked the continuity of all the wires from the harness, those wires coming from MAF sensor, throttle intake temperature sensor, EGR inlet temp sensor and oil temp sensor all signal wires have continuities. I also I checked the opening and closing of the EGR valve by supplying 12 volts power to the EGR terminals and it opens and closes smoothly. I believed no issue with wiring harness. I appreciate your comments, thank you.
03-14-2021, 08:37 PM
#2
Out Of Control!!
Join Date: Sep 2018
Location: unbegrenzt
Posts: 13,456
Received 3,983 Likes
on
3,130 Posts
2017 GLE350 4MATIC
Welcome! Please post a photo of the ML. Try posting the question in the W164 section, where owners will see it and can offer suggestions.
The following users liked this post:
chassis (03-14-2021)
03-14-2021, 09:41 PM
#4
Out Of Control!!
Join Date: Sep 2018
Location: unbegrenzt
Posts: 13,456
Received 3,983 Likes
on
3,130 Posts
2017 GLE350 4MATIC
Looks great! Nice and sunny. 
03-14-2021, 09:59 PM
#5
Junior Member
Thread Starter
Hi Chassis, That picture was taken last summer, today is not really sunny, I also posted to W164 forum lets see if somebody will respond, picture of my SUV was also uploaded.
Last edited by rrvtechcon; 03-14-2021 at 10:01 PM.
The following users liked this post:
chassis (03-14-2021)
