2014pinnacle Posted December 30, 2025 Share Posted December 30, 2025 Hi gouts I have 2016 pinnacle with an mp8 it’s just started throwing a Po403 code egr A control circuit open . What does this code mean will it shut me down and leave me stranded or can I continue my run and get it looked after when I get home. Quote Link to comment https://www.bigmacktrucks.com/topic/76269-p0403-egr-code/ Share on other sites More sharing options...
fjh Posted December 31, 2025 Share Posted December 31, 2025 7 hours ago, 2014pinnacle said: Hi gouts I have 2016 pinnacle with an mp8 it’s just started throwing a Po403 code egr A control circuit open . What does this code mean will it shut me down and leave me stranded or can I continue my run and get it looked after when I get home. It may derate you may be fine to get home with it! Quote Link to comment https://www.bigmacktrucks.com/topic/76269-p0403-egr-code/#findComment-588107 Share on other sites More sharing options...
2014pinnacle Posted December 31, 2025 Author Share Posted December 31, 2025 Yes it derated i abandoned the load guess im looking at an egr valve Quote Link to comment https://www.bigmacktrucks.com/topic/76269-p0403-egr-code/#findComment-588113 Share on other sites More sharing options...
2014pinnacle Posted January 1 Author Share Posted January 1 Anyone have any success with aftermarket egr valves my local dealer wants $3000 just for the part Quote Link to comment https://www.bigmacktrucks.com/topic/76269-p0403-egr-code/#findComment-588179 Share on other sites More sharing options...
fjh Posted January 1 Share Posted January 1 1 hour ago, 2014pinnacle said: Anyone have any success with aftermarket egr valves my local dealer wants $3000 just for the part 1 hour ago, 2014pinnacle said: Anyone have any success with aftermarket egr valves my local dealer wants $3000 just for the part are You parts canoning short the the wires see if the code changes to short! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/76269-p0403-egr-code/#findComment-588182 Share on other sites More sharing options...
The Heinz Posted January 2 Share Posted January 2 21 hours ago, 2014pinnacle said: Anyone have any success with aftermarket egr valves my local dealer wants $3000 just for the part I may be a dealer, but aftermarket has never worked well when it comes to emissions parts. Maybe someone makes a good aftermarket EGR valve, but I'd be wary of it. Quote Link to comment https://www.bigmacktrucks.com/topic/76269-p0403-egr-code/#findComment-588228 Share on other sites More sharing options...
2014pinnacle Posted January 14 Author Share Posted January 14 I just got my truck back together today we had to relate the the valve and the manifold broke bolts off getting egr off. The truck is back together and it sounds like a giant vacuum cleaner any thoughts on what it might be? It sounds fine for about a minute and then it makes like a high pitch vacuum noise I can’t find any leaks anywhere. I dont have a scan tool what kind of things would I see if the vgt turbo is stuck? Quote Link to comment https://www.bigmacktrucks.com/topic/76269-p0403-egr-code/#findComment-589069 Share on other sites More sharing options...
The Heinz Posted January 14 Share Posted January 14 EGR hot pipe probably isn't seated well, it's an absolute pain to get it correct. It's always recommended to replace the gaskets at the minimum when you pull it off, it's that much of a pain. Quote Link to comment https://www.bigmacktrucks.com/topic/76269-p0403-egr-code/#findComment-589071 Share on other sites More sharing options...
2014pinnacle Posted January 14 Author Share Posted January 14 Is their anyway of testing it? With my truck running and my hand on it I can’t feel anything blowing out around both ends of the pipe Quote Link to comment https://www.bigmacktrucks.com/topic/76269-p0403-egr-code/#findComment-589072 Share on other sites More sharing options...
fjh Posted January 14 Share Posted January 14 47 minutes ago, 2014pinnacle said: I just got my truck back together today we had to relate the the valve and the manifold broke bolts off getting egr off. The truck is back together and it sounds like a giant vacuum cleaner any thoughts on what it might be? It sounds fine for about a minute and then it makes like a high pitch vacuum noise I can’t find any leaks anywhere. I dont have a scan tool what kind of things would I see if the vgt turbo is stuck? Yup! Run some water over that pipe that the Heinz is showing you we called thes the asshole pipe designed by a Volvo idiot! the last thing to happen on a Saturday afternoon end of the day! You think you’re done and then this! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/76269-p0403-egr-code/#findComment-589073 Share on other sites More sharing options...
2014pinnacle Posted January 14 Author Share Posted January 14 What are the exhaust manifold torque specs 35 lbs? Quote Link to comment https://www.bigmacktrucks.com/topic/76269-p0403-egr-code/#findComment-589074 Share on other sites More sharing options...
fjh Posted January 14 Share Posted January 14 Heinz? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/76269-p0403-egr-code/#findComment-589078 Share on other sites More sharing options...
Mark T Posted January 14 Share Posted January 14 2 hours ago, fjh said: Yup! Run some water over that pipe that the Heinz is showing you we called thes the asshole pipe designed by a Volvo idiot! the last thing to happen on a Saturday afternoon end of the day! You think you’re done and then this! 🤔 that's quite the name 😂 Quote Link to comment https://www.bigmacktrucks.com/topic/76269-p0403-egr-code/#findComment-589094 Share on other sites More sharing options...
The Heinz Posted January 15 Share Posted January 15 1 Quote Link to comment https://www.bigmacktrucks.com/topic/76269-p0403-egr-code/#findComment-589145 Share on other sites More sharing options...
2014pinnacle Posted 18 hours ago Author Share Posted 18 hours ago Hi guys it was the hot pipe leaking guess the clamp didn’t quite seat. I worked the truck today and it worked great all day then to night just before I parked it engine light came on and have the p0403 code again what else should I do I need to do looking at? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/76269-p0403-egr-code/#findComment-589533 Share on other sites More sharing options...
fjh Posted 3 hours ago Share Posted 3 hours ago 14 hours ago, 2014pinnacle said: Hi guys it was the hot pipe leaking guess the clamp didn’t quite seat. I worked the truck today and it worked great all day then to night just before I parked it engine light came on and have the p0403 code again what else should I do I need to do looking at? Check the diff pressure sensor on the Venturi tube they tend to clog with soot! 4 screws! if I remember right! Note I am not a guru on these just something to check! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/76269-p0403-egr-code/#findComment-589565 Share on other sites More sharing options...
Joey Mack Posted 3 hours ago Share Posted 3 hours ago fjh is right. when you remove the sensors from the venturi you will see 2 little ports on the pipe and the sensor. be careful not to scratch the pipe when you clean the soot out. you can wet the soot with brake cleaner and try to pick it out gently. It is a dumb design and it WILL clog again. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/76269-p0403-egr-code/#findComment-589568 Share on other sites More sharing options...
2014pinnacle Posted 2 hours ago Author Share Posted 2 hours ago Ok thanks I was pondering taking it off Quote Link to comment https://www.bigmacktrucks.com/topic/76269-p0403-egr-code/#findComment-589576 Share on other sites More sharing options...
fjh Posted 20 minutes ago Share Posted 20 minutes ago 3 hours ago, Joey Mack said: fjh is right. when you remove the sensors from the venturi you will see 2 little ports on the pipe and the sensor. be careful not to scratch the pipe when you clean the soot out. you can wet the soot with brake cleaner and try to pick it out gently. It is a dumb design and it WILL clog again. There is no good design for making an engine eat it’s own shit simply an All round bad idea! Try it yourself sometime you will likely not like it! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/76269-p0403-egr-code/#findComment-589590 Share on other sites More sharing options...
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