1.6 CRDI engine problem P1186

Engine had a long cranking time, limited RPM and DTC P1186.

[@shimonbain]

I have an 07 Tucson crdi and I have a p1186. I can't go over 3000 rpm. What can I check?

[@user-no7td9gt5t]

Another thing that was causing low fuel pressure and DTC. Clogged tank filter in sender unit. --- Другое дело, что вызывало низкое давление топлива и DTC. Засорен фильтр бачка в датчике.

[@balanelgabriel3516]

After a fuel break I have this problem with long start crancking and rpm limit to 3000, also I have an error, P1186. What do you think is the problem?

[@devincarloospadaveedan3233]

My accent crdi 2006 morning starting treble wats problem

[@user-no7td9gt5t]

fuel hose from tank was sucking air causing bubbles in fuel line --- Топливный шланг из резервуара всасывал воздух, вызывая образование пузырьков в топливной магистрали

[@paulsp2693]

Is it diesel or petrol?

[@onpsxmember]

I have the same problem at the moment. It is gone but It'll come back. The diesel filter was changed a day before it happened. But i had a single incident where it happened around two years ago but without the failure. Where is that sender-unit located and what is a save way to remove it?

[@eddiej1980]

P1186 in a Kia is 02 Sensor Heater Circuit Shorted - Hardware Fault. Nothing to do with fuel rail pressure. It’s fuel rail pressure in other makes but not Kia. I have the 3000rpm issue and run the car whilst connected to a reader on live data and the fuel rail pressure is fine. It’s the o2 sensor at fault with that code

[@aminsalhi6177]

Where is the solution

[@stefangiurgila7807]

So you replace the 02 sensors? Or what did you do to fix. I get the same code on my Kia and says it's 02 but here on this video says fuel problem

[@eddiej1980]

@@stefangiurgila7807I replaced the o2 sensor near the top on the exhaust manifold. Solved the problem. I knew it wasn’t a fuel pressure / rail problem as live data on my diagnostic device showed the correct pressure

[@stefangiurgila7807]

@@eddiej1980 when I unplugged that sensor your saying at the top of the engine. A different fault code popped up P0031 bank 1 sensor 1. I think there is 2 02 sensors on cars, one at the top and one at the bottom. I think it's the bottom one bank 2 or something.

[@eddiej1980]

@@stefangiurgila7807 yeah. There is a pre and post CAT sensor. It was a few cars ago for me now but I’m certain it was the top one I replaced. I also got another code when unplugging but the sensor definitely fixed the issue

[@saifbenyoussef6914]

my car 2008 kia cerato. use too much fuel and not strong same before . from what can be this??? use too too much fuel.