Toyota Prado - "VSC Off" & "Check Engine" Lights are ON

[Udit S]

Hi All,

I have a 2.7L SWB Prado (2016) & I have completed 4 off road-drives with carnity (no other off-roading done on this car, prior to this - I am the 1st owner).

A month back I had done servicing of my car - which also included Spark Plug replacement & fuel injector cleaning. After 2 weeks (my wife was driving), suddenly she noticed that "VSC Off" & "Check Engine" Lights are ON. Because of which the car was not revving beyond 2000 RPM. I immediately took the car to the same garage - they ran the OBD & said the code came back pointing to the "Secondary Air Injector" - however it was evident they didn't seem sure. They did some cursory checks & when they restarted the car -> the lights went away 😐. They weren't able to explain why it exactly happened - but said "there is no problem - don't worry, u drive on"

 Fast forward to today - (again my wife was driving 🤨) on starting the car - the 2 lights ("VSC Off" & "Check Engine") came on. And car was not revving more than 2000 RPM. On her way to next stop (after an hour), when she started the car again - the LIGHTS WENT OFF on its own (& car became alright again)

Can anyone please advise - what should I do?

 

Image of "VSC Off" & "Check Engine" Lights are ON :-

[Frederic]

My suspicion is that during the spark plug replacement and injector cleaning they might created a loose contact on the air pump, located in that same area.

If you error code is P0418, have a look here:

P0418 TOYOTA: Code Meaning, Causes, Symptoms, & Tech Notes (engine-codes.com)

Taking into account the problem only started after their works, i would be inclined to pressurize them on doing a real proper diagnosis, not just a reset. 

Is this the dealership btw ?

 

[Udit S]

18 minutes ago, Frederic said:

My suspicion is that during the spark plug replacement and injector cleaning they might created a loose contact on the air pump, located in that same area.

If you error code is P0418, have a look here:

P0418 TOYOTA: Code Meaning, Causes, Symptoms, & Tech Notes (engine-codes.com)

Taking into account the problem only started after their works, i would be inclined to pressurize them on doing a real proper diagnosis, not just a reset. 

Is this the dealership btw ?

 

Hi Fredric,

I did my servicing from Al Nahda Auto, Ras al khor.

Actually there was one more issue (which I didn't mention b4) - after the injector cleaning & Spark plug repl. -> I started getting a slight delay in starting the engine from cold - that is, the engine cranked 2-4 seconds extra, before switching on. But this happened only when the car was resting for 12 hrs/overnight (not during when car was switched on, when it was in use). When I went to them a third time, yesterday, they cleaned fuel injector again -> & the delayed start problem went away (though it has only been a day)

Regarding the error code -> I didnt catch what it was (that was stupid of me)

I dont want to go back to them again - as they seem a bit clueless. (I am not sure if u are allowed but) if you can advise an alternate garage for me, that would be great (you can whatapp me on+971 502949628)

 

Also, I did some research - from the below video, it seems, this is a common issue in toyota/lexus - because of faulty fuel cap - https://www.youtube.com/watch?v=DgUvPQg310E&ab_channel=TheDocMackCarChannel

Let me know what you think.

Thanks.