Hi All!
My name is Anton, I am from Russia.
We made muffle tool for decision problem of P0400 P1228 P1402 trouble code.
We collected a lot of information about this problem and how to eliminate it. How much do you find this interesting?
Trouble codes P0400, P1228, P1402
Moderators: Doone, westonwarrior
Re: Trouble codes P0400, P1228, P1402
This may well be useful for technical people.
Thankyou Anton, and welcome.
Thankyou Anton, and welcome.
Re: Trouble codes P0400, P1228, P1402
ok.
A few days ago, I was approached by Dmitry Averin aka DemonAV, the founder of the Mazda Bongo Friendee club in Russia. He is also the creator of the site mazdafriendee.ru. He spoke very warmly about the club in the UK. He asked me to help Dan Holdsworth, who described the problems in a letter to Dmitry. Dmitry asked me to describe the knowledge base that I possess, to help the UK club and directly Dan Holdsworth.
Common signs:
After 10-15 minutes of engine operation, the spiral of heating the candles starts blinking, the car's power is lost. The malfunction may appear when standing in traffic jams or when the engine is idling for a long time.
The stock of the Westgate system is stationary.
What we knew:
P0400 is an error of the EGR system, usually together with P1228, P1402. If only one error P0400 is an ECU fault.
P1228 - error of the EGR vacuum system and control of the Westgate valve.
P1402 - malfunction of potentiometer and / or EGR valve.
Methods of malfunction diagnosis:
P1228
As we know, the EGR valve is controlled by 4 vacuum valves located on the vehicle frame under the driver's seat.
First you need to make sure that all the tubes connecting the valves are connected correctly and are not damaged. The normal resistance of the valve (we measure the resistance of the valve contacts) is 30-60 Ohm. If the contact is broken - resistance equals 1 - replace the valve. If the resistance equals 0, replace the valve.
Valves are technologically located in a bad/unfortunate place, subject to the influence of dirt and temperature from the engine. Often internal gaskets wear out and the valve needs to be replaced. To diagnose it is possible to check the resistance of the valve preheating the valve with a heating hair dryer to a temperature of 70-80 degrees Celsius.
A P1228 error may also occur due to a malfunction of the Westgate vacuum control valve.
Also check the vacuum tubes. We check the patency of the tubes. We check the resistance of the valve at 20 degrees Celsius and at 80 degrees Celsius after heating.
A P1228 error can also occur if a wiring fault occurs to the EGR and Westgate control valves located under the front passenger seat.
Error P1228 may occur due to the wearing out of the seals in the valve.
Check the wiring using a multimeter in the resistance measurement mode.
We measure the resistance between the contacts ECU 4D and 4I, 4Q, 4R, 4T - the control valves of the EGR system
4D and 4M - Westgate control valve
The indication of the normal state is 30-60 Ohm.
Important!
With the correct operation of the EGR and Westgate system, the valve stem of the Westgate system must have a "visible stroke" of 1-2 mm at idle speed and a visible stroke of 2 to 20 mm with a sudden set of engine speed.
P1402
This error may occur due to a mechanical malfunction of the EGR valve or a wiring fault.
By removing the valve connector we measure the voltage V constant between the White and blue wires of the connector with the ignition on.
4.8 - 5.2 V is the norm.
We measure the voltage V constant between the ground and the contact 1F ECU.
0.3-0.8 V with the ignition on.
3.6-4.2 V on starting engine.
I hope this helps in solving the problem.
Moreover, I want to say that a special scheme has been developed which allows you to disable the EGR system.
This scheme allows you to exclude the EGR system from the engine management system and muffle it.
This scheme allows avoiding errors P0400, P1228, P1402
You do not need to buy vacuum valves and the EGR valve.
The car gets great speed and responsiveness.
However, this affects the environmental friendliness of the car's exhaust, alas, I do not know how much it changes critically, because equipment for checking the exhaust of diesel engines in Russia is very small.
I do not know how critical it will be to owners in UK that their exhaust may approach the Euro0 standard.
A few days ago, I was approached by Dmitry Averin aka DemonAV, the founder of the Mazda Bongo Friendee club in Russia. He is also the creator of the site mazdafriendee.ru. He spoke very warmly about the club in the UK. He asked me to help Dan Holdsworth, who described the problems in a letter to Dmitry. Dmitry asked me to describe the knowledge base that I possess, to help the UK club and directly Dan Holdsworth.
Common signs:
After 10-15 minutes of engine operation, the spiral of heating the candles starts blinking, the car's power is lost. The malfunction may appear when standing in traffic jams or when the engine is idling for a long time.
The stock of the Westgate system is stationary.
What we knew:
P0400 is an error of the EGR system, usually together with P1228, P1402. If only one error P0400 is an ECU fault.
P1228 - error of the EGR vacuum system and control of the Westgate valve.
P1402 - malfunction of potentiometer and / or EGR valve.
Methods of malfunction diagnosis:
P1228
As we know, the EGR valve is controlled by 4 vacuum valves located on the vehicle frame under the driver's seat.
First you need to make sure that all the tubes connecting the valves are connected correctly and are not damaged. The normal resistance of the valve (we measure the resistance of the valve contacts) is 30-60 Ohm. If the contact is broken - resistance equals 1 - replace the valve. If the resistance equals 0, replace the valve.
Valves are technologically located in a bad/unfortunate place, subject to the influence of dirt and temperature from the engine. Often internal gaskets wear out and the valve needs to be replaced. To diagnose it is possible to check the resistance of the valve preheating the valve with a heating hair dryer to a temperature of 70-80 degrees Celsius.
A P1228 error may also occur due to a malfunction of the Westgate vacuum control valve.
Also check the vacuum tubes. We check the patency of the tubes. We check the resistance of the valve at 20 degrees Celsius and at 80 degrees Celsius after heating.
A P1228 error can also occur if a wiring fault occurs to the EGR and Westgate control valves located under the front passenger seat.
Error P1228 may occur due to the wearing out of the seals in the valve.
Check the wiring using a multimeter in the resistance measurement mode.
We measure the resistance between the contacts ECU 4D and 4I, 4Q, 4R, 4T - the control valves of the EGR system
4D and 4M - Westgate control valve
The indication of the normal state is 30-60 Ohm.
Important!
With the correct operation of the EGR and Westgate system, the valve stem of the Westgate system must have a "visible stroke" of 1-2 mm at idle speed and a visible stroke of 2 to 20 mm with a sudden set of engine speed.
P1402
This error may occur due to a mechanical malfunction of the EGR valve or a wiring fault.
By removing the valve connector we measure the voltage V constant between the White and blue wires of the connector with the ignition on.
4.8 - 5.2 V is the norm.
We measure the voltage V constant between the ground and the contact 1F ECU.
0.3-0.8 V with the ignition on.
3.6-4.2 V on starting engine.
I hope this helps in solving the problem.
Moreover, I want to say that a special scheme has been developed which allows you to disable the EGR system.
This scheme allows you to exclude the EGR system from the engine management system and muffle it.
This scheme allows avoiding errors P0400, P1228, P1402
You do not need to buy vacuum valves and the EGR valve.
The car gets great speed and responsiveness.
However, this affects the environmental friendliness of the car's exhaust, alas, I do not know how much it changes critically, because equipment for checking the exhaust of diesel engines in Russia is very small.
I do not know how critical it will be to owners in UK that their exhaust may approach the Euro0 standard.
Re: Trouble codes P0400, P1228, P1402
Welcome. It's great to see Bongo Fury is increasingly going beyond our own borders. A compatriot of yours, Cutlass, has been contributing hugely recently. Obviously there's a great deal of bongo skill over in Russia and it's great you share it with us.
Re: Trouble codes P0400, P1228, P1402
i know Cutlass of Mikrob.ru forum site
Thank you
Re: Trouble codes P0400, P1228, P1402
Hi Anton
Thank you for posting this information as I know there are some of us suffering the same problem. I have 2001 2.5 turbo diesel and have suffered the flashing glow plug and loss of power exactly as you have described. It is all very frustrating. I haven't checked anything electrical yet but from your detailed description I can start checking.
I have managed to check the solenoids under the passenger seat by swapping them with another Bongo but didn't have the time to swap the four under the drivers seat.
I did however fit a vacuum gauge before the solenoids (passenger side) which of course are before the wastegate. Started the engine and the vacuum was around 15" and remained steady until the glowplug light came on and the vacuum dropped to zero.
With your input I can now proceed to check the other components.
Thank you once again for this and I will update you on my progress.
za tvajo zdarovje.
Tim
Thank you for posting this information as I know there are some of us suffering the same problem. I have 2001 2.5 turbo diesel and have suffered the flashing glow plug and loss of power exactly as you have described. It is all very frustrating. I haven't checked anything electrical yet but from your detailed description I can start checking.
I have managed to check the solenoids under the passenger seat by swapping them with another Bongo but didn't have the time to swap the four under the drivers seat.
I did however fit a vacuum gauge before the solenoids (passenger side) which of course are before the wastegate. Started the engine and the vacuum was around 15" and remained steady until the glowplug light came on and the vacuum dropped to zero.
With your input I can now proceed to check the other components.
Thank you once again for this and I will update you on my progress.
za tvajo zdarovje.
Tim
"Living the Dream"
-
mikeonb4c
- Supreme Being
- Posts: 22875
- Joined: Sun Nov 05, 2006 10:49 pm
- Location: Living with Mango Bongo in the North West but with a tendency to roam
- Contact:
Re: Trouble codes P0400, P1228, P1402
And best wishes to DemonAV-not seen him on here for a long time but always remembered how skilled he and the Russians were/are with their Bongos 
Re: Trouble codes P0400, P1228, P1402
Skilled Russians on Bongo Frendee... Lol
Ok. If anyone have a question - welcome
Selfdiagnostic Ten-Gnd
Ok. If anyone have a question - welcome
Selfdiagnostic Ten-Gnd
-
Kirsty1330
- Junior Bongonaut
- Posts: 15
- Joined: Tue Nov 06, 2018 7:15 pm
Re: Trouble codes P0400, P1228, P1402
Hi Metalhead,
I have 2 flashing fault codes, 0400 & 1228 on my 2002 2.5TD.
I have dismantled & cleaned the EGR & Intake system & completely cleaned it all. Erased the fault codes & as soon as the engine warms up the codes come back again.
When the engine is cold the turbo waste-gate works perfect.
I have replaced all the vacuum hoses both right & left side but the problem still exists.
My next step is to replace all the vacuum solenoid valves but I’m not sure which valves control what (which ones to replace) & also the correct name to try & source the replacement parts as can only find second hand ones & one other place who seem to be charging over £100 for a new one which looks very similar to others listed on internet for around £20? Do you have any idea what the rough cost would be to replace them?
There doesn’t seem to be any Bongo Specialists in the North East of Scotland so I am kind of stuck with trying to figure this out.
If anyone knows any of the above, correct name for the Solenoid Valves?, rough price & where to get new replacements & what each solenoid valve does it would be much appreciated.
Thanks
Kirsty
-
Gandalf The White
- Junior Bongonaut
- Posts: 22
- Joined: Wed Mar 11, 2020 5:42 pm
Re: Trouble codes P0400, P1228, P1402
Hi there.
I had a longstanding problems with our 2002 Diesel Bongo with the dreaded going into limp mode and glow plug light flashing once engine was warm and sat in traffic. I cleared all the old fault codes and found the two fault codes being displayed were P0400 and P1228. Spent hours researching this trawling for answers through the forums, FB groups and it's also well detailed on the Wastegate Actuator factsheet in the members section. It's obvious people have spent hours on this, but nothing seems to give a permanent guaranteed long term fix. After much head scratching I discovered Mark at The Bongo Master in Leicestershire, really good, decent, honest bloke, who knows Bongos inside and out, he has great reviews from all his customers. Mark immediately knew what the problem was. It's a known issue with later Bongos, due to combination of a change of turbo design and poorer quality grade diesel in the UK. Mark charges £600 to retrofit an older turbo from an earlier model and changes the relevant ducting and piping to go with it. The van then ran as sweet as a nut, with no loss in performance at all. Just thought I'd share, as it could save somebody alot of time, money and hassle in the future.
https://www.thebongomaster.co.uk/
I had a longstanding problems with our 2002 Diesel Bongo with the dreaded going into limp mode and glow plug light flashing once engine was warm and sat in traffic. I cleared all the old fault codes and found the two fault codes being displayed were P0400 and P1228. Spent hours researching this trawling for answers through the forums, FB groups and it's also well detailed on the Wastegate Actuator factsheet in the members section. It's obvious people have spent hours on this, but nothing seems to give a permanent guaranteed long term fix. After much head scratching I discovered Mark at The Bongo Master in Leicestershire, really good, decent, honest bloke, who knows Bongos inside and out, he has great reviews from all his customers. Mark immediately knew what the problem was. It's a known issue with later Bongos, due to combination of a change of turbo design and poorer quality grade diesel in the UK. Mark charges £600 to retrofit an older turbo from an earlier model and changes the relevant ducting and piping to go with it. The van then ran as sweet as a nut, with no loss in performance at all. Just thought I'd share, as it could save somebody alot of time, money and hassle in the future.
https://www.thebongomaster.co.uk/