Citroen C3 II error P0493 - Car enters emergency mode 30km / h

Question

Hello, I bought a broken c3 from 2014. with 1.4 HDI engine Car done, I have a problem because the car after entering the emergency mode. Lexia has shown an error P0493 - inconsistency between the setpoint (no control) and the state of the radiator fan group Fuses checked, Radiator fan relay...

Megawe · Answer

If the relay sounds, you need to check if the fan is missing a plus or a minus.

wqq · Answer

In c3 you have probably 3 types of fans ... If you have an electronic module then look for the reason there ...

Anonymous · Answer

Temperature sensor connected? Because, as the name suggests: inconsistency of the signal sent from a given sensor or module, where the setpoint is too high or low. Question: Will the fan operate at high speed when entering emergency mode?

Posw580 · Answer

No fan from the beginning does not work. Connected briefly to the battery, it works, so the fan fault disappears.
In Lexi, when it calls the program to check the fan assembly, is the cycle relay and the fan silent ??

Where is this temperature sensor to check ??

lemmak · Answer

The right side of the engine (standing in front of it) at the height of the head. Most likely green, 2 pin, near the plastic thermostat housing (I write from memory - I'm wrong - please correct it).
As your colleague wqq rightly pointed out, there are different types of fans - you need to track down the fan module - it's likely the culprit of your troubles.

Posw580 · Answer

Gentlemen, what module are we talking about?
my C3 only has electronics with a resistor (it was also replaced), the fan does not work. And the second thing is the driver with the relay (photo attached) also replaced and nothing.

lemmak · Answer

It is about this module - the controller, "call it, call it" - you have changed it, I hope it works - it falls off.
Let me quote the advice (translation from the translator):

P0493 is a generic OBD-II code for a voltage problem with the electric fan control system because the signal sent to the engine computer is incorrect. That is, there is a bad "soil?" or the fan does not work.
P0493 can be caused by many reasons, but the most common causes are:

Electric fan motor defective
Faulty electric fan relay
Faulty wiring and fan electrical connectors
Defective engine coolant temperature sensor
Blower electric fuse blown

Posw580 · Answer

That's how I changed from another car that worked in it. So ..... as I wrote earlier.
When the fan is activated from the program, the relay ticks in this module but the fan does not start.
I still have the error of some evaporator sensor (but I do not know where it is and what sensor it is) maybe he is the culprit.

lemmak · Answer

Look for it in the air conditioning system. The activation from the program should turn on the fan despite the incorrect signal from this sensor. Check if the controller is - and +. And what comes to the fan during testing.

Posw580 · Answer

can you specify where to check the voltage at this sensor is it coming ??

Anonymous · Answer

Have you checked the large fuses in the engine compartment? Are located under the fuse box and you have a 70A fuse on the left, maybe you have a problem here. Ps. How can I improve my earlier post?

Posw580 · Answer

Fuses checked all and large and small

Anonymous · Answer

Approx. That is, everything being replaced and still the same problem is the last thing described below. You wrote that you have an additional problem related to air conditioning and unless I'm mistaken it's probably due to the lack of a factor. (If I think correctly) It remains to fill the air conditioning agent or make a jumper going to the sensor from the air conditioning pressure and here, unfortunately, you will need a diagram of its installation to know which pins you should make a jumper (but I don't remember which pins), because without this scheme you can make additional problems. Ps. Merry Christmas.

Posw580 · Answer

Since the evaporation sensor error has no effect, I don't know what could be. why the fans are not working. how to check if there is a 12V to the controller ??

wqq · Answer

I hope your cables are tidied up ...

Posw580 · Answer

So the installation was not touched.

Anonymous · Answer

In this model, as the air conditioning does not work well and the fan will not turn on, because it is blocked and the only possibility to turn on the fan is already described. Because the same fan also works and air conditioning, which, unfortunately, the manufacturer did so that everything works in your car and there is no way to bypass the malfunctioning air conditioning as above.

śmiały mały · Answer

Hello,and what problem solved?

Citroen C3 II error P0493 - Car enters emergency mode 30km / h

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