Diesel P1215 and P0105 fault codes

[buttyboy0]

Hi Guy's, I'm new to this forum and I have searched some solutions to the above P1251 and P0105 faults but with no luck to identifying the cause.

I'm I missing something as I have checked the VRV solenoid and it is operating, I have also sprayed WD40 to try and free it up, and checked the vacuum hoses.

I don't want to spend £300+ for a replacement if this is not the root cause of the problem.

Can anyone shed any light on this fault and where I can source replacement parts without going to Toyota?

Also can anyone advise on a good Toyota Diesel specialist based in South Wales?

 

[ffej]

Hi its the vsv valve you should look at the valve with the red connector ,use GT85 not wd40 have a read on page 3 under the heading lack of power stared by Scottie I have put a lot of info there to get over this problem and a PDF for part no if you need any help , Jeff 

[buttyboy0]

Thanks for the info ffej.

I had a look on the page you mentioned.

I'll call over to Halfords later and get a can of GT85 bike lubricant and give it a try.

Did the problem stem from the red capped valve or the black capped VSV valve?

I intend to do both valves so is it worth soaking them over night before refitting them or will the they work straight away?

 

[ffej]

Its the red cap ,just spray in side them all ,I did use my air gun to blow them out ,aldi had the spray @ 1.99 with a over night soak it went very good ,I have also cleaned egr valve ,let me know how you get on I live near you in Brecon  jeff

[Devon Aygo]

P0105 = Manifold absolute absolute pressure/bariometric pressure circuit and indicates a fault within:

Open or short in pressure sensor circuit or Turbo pressure sensor

Open or short in VSV sensor or VSV for Turbo pressure sensor

Disconnected or blocked vacuum pipe

Engine ECU

the fault is set when either:

An open or short is detected in the turbo pressure sensor circuit that occurred for more than 2 seconds

Turbo pressure sensor output voltage drops below 0.2v or is greater than 4.5v

P1251 = Turbocharger system overboost malfunction, and is well documented on the forum 

The picture attached shows the Turbo pressure sensor which is attached to the intake manifold and has a small vacuum pipe this sensor provides the engine ecu with the manifold and atmospheric pressures: 

 

 

[buttyboy0]

I have removed both of the VRV (red and black capped) valves and soaked them over night in GT85 but the problem still remains.

Can anyone recommend either a reputable garage or specialist in south wales who can diagnose the exact problem, or is it best to replace both valves as I don't know which one is causing the fault?

Many thanks for the replies so far.

 

[ffej]

Its the red cap ,just spray in side them all ,I did use my air gun to blow them out ,aldi had the spray @ 1.99 with a over night soak it went very good ,I have also cleaned egr valve ,let me know how you get on I live near you in Brecon  jeff

[ffej]

Hi what is wrong with your rav ,dose it hold back and then go off on one ,have you clean the egr valve?  Change the fuel filter ?As I live near you,you are welcome to come to my home  near brecon and fit my spares to find out which valve is at fault ,jeff

[buttyboy0]

Jeff.

You were spot on with the diagnosis.

I soaked the both of the vacuum valves in the GT85 and left over night. (Note; don't use WD40 as it swells the seals up and makes the problem worse)

Refitted them the next day and run the car for approx. 50 miles before the symptoms cleared.

It did not feel 100%, so as per you suggestion, I removed the EGR valve and gave it a good clean with Carb cleaner before refitting it.

Whilst it was off I also replaced the diesel filter and air filter.

Tried the car out and it now fly's up the road.

Total cost of the repair was less than £20 !!!!!!!

I think a number of small individual problems were present but have all now been sorted.

Thanks very much for the advice.

 

[ffej]

Im very pleased for you ,I am glade that my help as cured your problem ,just hope now that others with this problem ,will do the same as you and save them a lot of cash ,Jeff