Engine light flashing and loud fan on
2014 Peugeot 208 active

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Maggie
Driver
1 points

Problem added: May 24, 2021 (3 weeks ago)
Hi, The engine management light comes on flashing and the fan comes on loud, it varies, sometimes it comes on for 30 seconds, sometimes 6 minutes, sometimes not at all, as soon as the fan goes off, the engine light goes off too. Had it checked, OBD shows no faults, the garage doesn't know the reason. Any ideas would be appreciated.

Car details
Car: Peugeot 208
Variant: active
Model Year: 2014
Category: Engine & Drivetrain
Electrics, ECU, Warnings & Lights
Replies and Fixes
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whittingehame
Legend
19,293 points

May 24, 2021 (3 weeks ago)
Is this a petrol or diesel engine ?
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Maggie
Driver
1 points

May 24, 2021 (3 weeks ago)
Replying to post by whittingehame:
Is this a petrol or diesel engine ?
Hi, its petrol 1cc
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whittingehame
Legend
19,293 points

May 24, 2021 (3 weeks ago)
Sounds as if it may be the engine coolant fan kicking in when needed and running till engine temp drops and then cuts off . Usually stays running longer if stuck in traffic jams or stop / start journeys which is normal . Could double check coolant level .
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Maggie
Driver
1 points

May 24, 2021 (3 weeks ago)
Hi, thanks for your reply. The coolant level is fine and I get that the fan comes on when needed and yes it’s true that it stays on longer in traffic but why does it trigger engine light to come on flashing ?
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whittingehame
Legend
19,293 points

May 24, 2021 (3 weeks ago)
Light may be flashing as the sensor is sending signal to the ECU that engine is on the verge of overheating . You could try replacing engine coolant temp sensor and see if it helps if concerned . Not usually expensive , about a tenner .
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Maggie
Driver
1 points

May 25, 2021 (3 weeks ago)
Thank you for your advice. I will try doing that today. Can I ask if the broken seal around the gas cap can cause the engine light to come on ? I read about it a lot but the mechanic recons it’s very unlikely. My cap seats on tight but the seal has 2 little cuts in it.
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whittingehame
Legend
19,293 points

May 25, 2021 (3 weeks ago)
On some makes of car, that can trigger the light and can often cause fuel smell .
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Maggie
Driver
1 points

May 25, 2021 (3 weeks ago)
Thank you
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Maggie
Driver
1 points

May 28, 2021 (2 weeks ago)
Hi I’ve got the temperature sensor replaced and it was fine for few days but today the light flashed again briefly for about 10 sec, I’m beginning to think it have something to do with fuel levels but I have no idea what. Do you have any other ideas please ?
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whittingehame
Legend
19,293 points

May 28, 2021 (2 weeks ago)
It's unlikely to be fuel levels . Possibly engine thermostat sticking slightly , late in opening .
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Maggie
Driver
1 points

May 28, 2021 (2 weeks ago)
The Mechanic checked it once again and he doesn’t think it has anything to do with the thermostat. He thinks it something with the engine itself that makes the light and the fan come on and that it is nothing that he can do , it’s probably gonna be too expensive to handle he recons.
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whittingehame
Legend
19,293 points

May 28, 2021 (2 weeks ago)
Your mechanic is very vague and not giving you any information to justify his opinion . Good he can eliminate a possible sticking / opening late thermostat without testing it , dont know anyone else that can !! It could possibly be something fairly major , like a head gasket starting to go but that can be checked with a block test or a pressure test on cooling system . I could comment further but wont , Hope you get it resolved one way or the other .
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Maggie
Driver
1 points

May 28, 2021 (2 weeks ago)
I went to 2 different places and they not helping me at all , and the Peugeot dealership is just way to expensive , I don’t know what to do anymore
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whittingehame
Legend
19,293 points

May 28, 2021 (2 weeks ago)
It all depends on the general condition of the car and engine . mileage , MOT on deciding what to do . You could keep using the car , especially if just local use and see if it develops further , Carry out replacing thermostat , getting block test / cooling system pressure test carried out is another option . But with different people already having worked on car , many garages may not want to get involved . Or get rid of as a trade in for another car rather than spend more money or time on it .
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