[Ian M Davis]

I noticed you battery voltage is low so if you still have problems after trying the suggestions Michaelk and RedSector gave I would check the alternator. Given that the car starts once after recharging the battery the alternator may not be charging the battery. Next time you get the car started it would be worth checking the battery voltage while the engine is running. You should have about 14V if the alternator is working.

 

[Ian M Davis]

One thing you could try is clear the faults before attempt to start the car. The glow plug fault is common and shouldn't stop the car starting. In the case of the turbo pressure fault I have seen other posts on the forum with the same fault and it didn't stop the car from starting.

One other idea on the electrical theme. A lot of 407's have problem with the BSM (engine fuse box). Quite often a fault in the BSM can lead to a low or no voltage at fuse F10. I can envisage a situation where the BSM works for a short period after the battery is connected then stops.

 

[Ian M Davis]

Well tested the F10 fuse and that has voltage so still looking into it. Trying to install diagbox but that in itself is a pain in the arse.

Sorry F10 didn't solve your problem. Have you followed RedSector's advice on fixing the high turbo pressure problem.
The fact that the fault won't clear suggests the sensor has a problem. Given that the car starts sometimes I am not convinced this the reason for your main problem but it would worth eliminating it.

What age is your 407? Depending on its age if you get Diagbox installed you may still find you have to use the imbedded version of PP2000. I take it know you can't have Diagbox and PP2000 installed on the same computer.

 

[Ian M Davis]

I will look your engine up on servicebox when I get a chance but in the meantime this video for a 407 with 1.6l HDi engine may help:

. The sensor should have a 3pin plug.

 

[Ian M Davis]

Neither do I mate.

From what I have read on various blogs and other web sites the fault code can be generated if only one glow plug fails. Apparently, on some cars they are now using them to improve fuel efficiency/pollution.

 

[Ian M Davis]

I had a look at the 407's 2.0l HDi in Peugeot service box and there are two different 2.0l HDis one is a 138ps and the other is a more powerful 163PS. The 163PS has a combined pressure and temperature sensor (4 pins). I have attached the instructions to change this sensor and a part list that includes the part no for the sensor (there are several variations on the parts list but the pressure/temp sensor is the same on all of them).

The is no instructions for the 138ps engine but there is a parts list which may help. This engine has seperate pressure and temperature sensors. There are several parts list but both sensors are the same on all of them. This pressure sensor has 3 pins.

 

[Ian M Davis]

Car is a 2007 model

If it's the 2007 model you're right Diagbox should be better.

 

[Ian M Davis]

Guessing its the lower power 2.0 as it looks like this with 2 separate sensors, and reckon the one arrowed is the pressure sensor

Yes that looks right. Here is an example of a 1920CZ used on that engine: 1920CZ - Sensor, air pressure sensor OE number by CITROËN, PEUGEOT | Spareto

 

[Ian M Davis]

If I’m not mistaken the 163 hp engine is the twin turbo 2.2 version, which are quite rare in Oz. Take a look at your VIN. It should have “RHR” in it, which is (one of) the engine designations for the 136.

Peugeot servicebox lists the 2.2l HDi as 175. I think that's PS metric HP

 

[Ian M Davis]

I thought it might be interesting to post what my version of servicebox shows for the 407 engines. The first screen shot is from Servicebox and the second from the wiring diagrams section (SEDRE). One confusing thing is they list the engines differently. They both show two engines: DW10 BTED with and without FAP and DW10 CTED. The engine power specification seems to differ slightly to the figures I found on the internet:
DW10 BTED4 / RHR 136PS (100 kW, 134 HP) with or without FAP
DW10 CTED4 (DW10C) / RHH (165 PS (121 kW, 163 HP) with PEF

 

[Ian M Davis]

Does anyone have a pinout for the glowplug relay? Just so I can test plug resistance from the relay instead of trying to get to the actual plugs. Resistance values would be good too?

I have attached a wiring diagram which I think is probably about right for your car. The wiring diagrams vary according to the RPO number (this should be at the top of the tyre pressure label near the driver's door hinge) but I think the glow plug relay details on the diagram should be right. The resistance of the glow plugs should be no more than 6 Ohms. They are 12V heaters so in fact I would expect them to be much lower than 6 Ohms when cold.

 

[Ian M Davis]

The errors you have so far disclosed, to me, don't suggest it would stop your engine starting. I am wondering if the anti-theft might be engaged or at play ?

To add to RedSectors suggesting. Once you get DiagBox working you should look at the immobiliser in both the engine ECU section and the BSI section. What sometimes happens is that the key's transponder works okay so the car passes the beep test but the engine ECU doesn't receive the unlock command from the BSI. This fault does not generate a fault code.

 

[Ian M Davis]

Engine control unit locked?

That's is what I feared the engine ECU should be unlocked. The transponder label recognised tells me the key is being recognised. There should be another screen relating to the engine ECU which shows that it's waiting for a response from the BSI.

 

[Ian M Davis]

Thanks again Ian, didn't get a pic but in the engine ECU it said it was fine. Have to bear with me on the diagbox thing its all new to me. Used to vagcom and generic readers.
Anyway battery has finally died so its removed and on charge for another bash at it tomorrow.
What does 'economy mode active' mean? Keeps flashing up on the screen in the middle of the dash wonderer if it was relevant.
Also diagbox shows the same 2 codes that have appeared before. Didn't get time to pull the sensor or check the glow plugs (neighbours car and tend to be busy with my own stuff)

Thanks for the help all much appreciated

Don't worry about economy mode. It just turns off the less important things to save battery power. It comes up after 30 minutes if an accessory is left running or if the battery drops below 10V. It will clear when the engine starts.

In the case of the engine ECU diagbox result does is show waiting for BSI?. If so that is bad, it should say unlocked.

 

[Ian M Davis]

Definately didn't say waiting for BSI mate, pretty sure it said unlocked.

That's very odd because the BSI data is saying it's locked.

 

[Ian M Davis]

I thought it may help if I attached some photos of a Diagbox screen for a car (Peugeot 207) with an immobiliser issue. There are two photos for the BSI and one for the ECU. The 207 BSI diagnostic gives a bit more information but is essentially the same as the 407 is giving. The important thing being that engine control unit is locked so the car will not start.

In the case of the 207 ECU diagbox has recognised a problem with the immobiliser you can see it sent a seed (unlock code) but has not had a response from the BSI so will not unlock.

The photos are from another discussion on the forum: 207 Crank but no Start. In that case the car initially had a problem with the CAN bus at the BSI and after a lot of work the car ran for a month or so then this fault developed. The solution was to replace the ECU/BSI kit. At one stage there was water on a ECU connector and I suspect a tiny amount water got into in the ECU.

the same

 

[Ian M Davis]

How do you get that 'expert' mode? During fault finding diagbox asks me for a username and password but I have no idea what it is so just click the X and it seems to let me carry on as normal

Turn off your internet connection. Diagbox is trying to connect to the Peugeot server.

This video may help

 

[Ian M Davis]

This may help as well: Citroën Diagbox User Manual | Manualzz

 

[Ian M Davis]

Havent had chance to get at the car yet but playing with diagbox found the scan reports

That's was an interesting report. In case you don't know in DiagBox ECU stands for Electronic Control Unit so every box on the CAN bus is an ECU. The engine control unit (engine ECU or injection control) is the SID803A. There seems to be a lot faults associated with several ECUs. These may be historical. With Diagbox you need to view the fault before you can clear it and it may be that faults have been fixed but not cleared. One fault that concerned me was U1213 vehicle speed. It can be an ABS fault but it could be a CAN bus communications problem. My guess is that there may be a communication problem between the BSI and engine ECU and bus connection between these two units usually goes through the ABS. It could be as simple as the ABS electrical connector may need cleaning.

 

[Ian M Davis]

Well I say no issues, neighbour says it feels like theres no turbo....

I don't think that's surprising given that you have an over pressure fault. The engine ECU will probably open the turbo's waste gate to reduce the pressure.