DS 5 Engine repair needed, no fault code

[babulasi]

Hi, I have a problem with my DS 5 2.0 blueHDI...so yesterday I go from work and sudenly a warning come up with message ENGINE REPAIR NEEDED, the car is running as normal, no lose of power, no check emgine light...I check with Torque PRO for faults and did t show any...what the heck is going on?!

[GiveMeABreak]

Very likely some emissions related issue, but it really needs Diagbox to check for any faults as not all after-market scanners can read everything.

Is this a Hybrid model?

[babulasi]

No, it is 2.0 hdi 180hp, automatic gearbox...it happen after I stop, start/stop system was on and after I released the pedal from brake, engine start and the message pop in

[GiveMeABreak]

Ok, so I have heard that the alternator belt can be a cause for this - and as you mentioned it came up about the time of the engine re-start, it may be worth investigating here...

[babulasi]

you think the belt has stretched and is slipping? I'll check it out anyway, thank you so much for the useful information

[GiveMeABreak]

It's just a possibility, but without a fault diagnosis, it's hard to say. I just mentioned this as it has been known with Stop Start systems and this message when restarting.

[babulasi]

I understand... I'll check the belt, and if everything is fine there, the next thing is the battery... Of course, I'll also run a diagnostic check at the service center along the way

[Paul-R]

Is this a reversible alternator system?

[babulasi]

I think it is...I check voltage while running, it is 14v, so that's not the problem... :/

[Paul-R]

No but the belt and accompanying pulleys, etc need to be in top condition.

[heiluri]

Hello,

I had this too on my DS5 2016. Engine Repair Needed message but the check engine light turned off. Hooked it to Diagbox and found the code P0494 62 Fan Assembly. Status Permanent - Lack of coherence between the status detected and the reference value of the slow speed.
Waiting for the spare part to arrive.

[Alnum]

Hey. That’s exactly what happens to my c4. Any chance you received the spare part and had it fitted? What spare part was it if I may ask? Thanks in advance!

[xantia_v6]

Hey. That’s exactly what happens to my c4. Any chance you received the spare part and had it fitted? What spare part was it if I may ask? Thanks in advance!

You need to get the engine faults read with Diagbox or a professional quality diagnostic machine, otherwise there are too many possible faults to consider.

[Alnum]

It’s the same error code P0494 62.

[GiveMeABreak]

Fault Code:	P0494 62
Description of Fault:	Fan assembly: Lack of coherence between the status detected and the reference value of the slow speed. Incoherence between the reference value (low speed) and the status of the fan assembly. The time of appearance of the fault code is 30 seconds
Conditions for Fault to clear:	The following conditions have to be met - When driving - Activation of the cooling fans unit
Downgrade Modes whilst Fault is active:	Request for opening the piloted flaps (if present) Fan assembly slow speed regulation reference value Engine temperature setting lowered to a threshold Deactivation of the air conditioning Switching on of the warning lamp and/or warning message: "SERVICE" warning lamp Engine water temperature warning light
Symptoms:	Malfunction of the production of cold air Uncomfortable temperature (Vehicle) Starting problem Grinding / Squealing / Grating Lack of power
Suspect Areas:	Fan assembly Fuse Electrical harnesses Connectors Supplies protection and management unit Dual speed fan assembly electric control unit Engine management ECU