EGR fault codes even though I've just had the valve replaced

[James Shiba]

Hi took my 2006 Is220d (138000m) into the garage with very low power in gears 1 and 2. (No warning lights)

One of the injectors needed replacing and the mechanic cleaned the EGR valve. I drove the car away and within 5 mins it went into limp home mode with EGR error codes (0400). I cleared the code and took the car back. At some point I also had DPF warning (acting below threshold(?)).

He replaced the valve completely and cleaned the DPF. 

This time the car had loads of power - apart from a slight "niggle" around 25mph (momentary loss of power). On the first journey of more than 5 minutes (most of my driving is motorway) the same EGR warning came on after about 40mins. It went into limp home mode and although I cleared the error the car is pretty un-drivable now. The power is all over the place.

Any ideas? 

Thanks

 

[ColinBarber]

Are you still getting P0400 errors or different ones?

If an injector was replaced, was the injector's compensation code programmed into the ECU?

[James Shiba]

Hi

The latest code i got was tge EGR (0400).

Interesting point about the ECU codes though. I doubt if they were added to the cpu. (Not a Lexus garage).

Thanks

[James Shiba]

3 hours ago, ColinBarber said:

Are you still getting P0400 errors or different ones?

If an injector was replaced, was the injector's compensation code programmed into the ECU?

Hi Colin - I've just been looking up programming of the injector code into the CPU - is this something that can ONLY be done at Lexus?

Thanks

[ColinBarber]

3 hours ago, James Shiba said:

Hi Colin - I've just been looking up programming of the injector code into the CPU - is this something that can ONLY be done at Lexus?

 Thanks

Someone with access to the diagnostic tool Techstream, either Lexus dealers or a Toyota specialist independent. It wouldn't cause a P0400 error though, poor idling/rattling is a symptom.

[James Shiba]

Great, thank you...gives me something to go on!

[James Shiba]

Hi, apparently the injectors weren't replaced - it was the seal, so I'm assuming that there was no programming needed.

It's with the garage again and they've cleaned out the (new) EGR valve and have ordered another just in case it's faulty.

Is there anything else that could cause the EGR warnings, if the unit has been replaced? It happened first, soon after the injectors seals were replaced.

Thanks again