Appoman Posted February 9, 2018 Share Posted February 9, 2018 Hi all Audi A6 2.0 TDi 2010 (60 plate) I had a service and timing belt done a few weeks back and since then the engine fan starts up immediately the engine starts and stays on until it's switched off. No over-run, that I've noticed. Audi told me that the DPF sensor had a fault and was causing the problem. Got the job done, collected the car and guess what - the fan is still on all the time. Sods must have known it wasn't fixed. I'll be taking it back, but in the meantime does anyone know if there is anything that could have been damaged during the timing belt work which could be the cause? Call me suspicious, but this problem only started immediately after the timing belt work was done.... I'm not a massively experienced car mechanic, most knowledge is to do with 2002 BMW 530i M Sport, but I am reasonably practical and if there are coolant temperature sensors (for example) which I can check then please can someone point me in the right direction or give me a link to previous threads if they deal with this issue? The coolant level seems too high in the reservoir, don't know if that can cause an issue? cheers Appoman Quote Link to comment Share on other sites More sharing options...
Jonny1971 Posted February 14, 2018 Share Posted February 14, 2018 I have A6 2.0 tdi 2010 have same problem engine fan runs whilst engine on but engine not getting hot have had fan control module changed but still have the problem not sure wht to do ? Quote Link to comment Share on other sites More sharing options...
Appoman Posted February 14, 2018 Author Share Posted February 14, 2018 Hi Jon Nobody replied to my post with a solution, but I may now be able to help you instead The fault was not the DPF sensor, but it was the aircon pressure sensor - replaced that, and all is good. I was only billed for one job too, so have to applaud Audi for that Hope it helps Steve Quote Link to comment Share on other sites More sharing options...
Jonny1971 Posted February 14, 2018 Share Posted February 14, 2018 Thanks Steve will look into that many thanks mate 👍Jon Quote Link to comment Share on other sites More sharing options...
Appoman Posted February 14, 2018 Author Share Posted February 14, 2018 no problem, that's what these forums are all about :-) Quote Link to comment Share on other sites More sharing options...
Magnet Posted February 14, 2018 Share Posted February 14, 2018 Hello Jon, When you say the engine is not getting hot, do you mean not overheating, or not getting up to temperature? if its not getting up to temperature then it would be wise to have the actual running temperature measured. For both, Sensors such as the coolant temperature sensor can cause the fan to run all the time if they become faulty or go open circuit, since the system goes into fail-safe and runs the fan as it would do if it was running over temperature. Kind regards, Gareth. Quote Link to comment Share on other sites More sharing options...
Jonny1971 Posted February 14, 2018 Share Posted February 14, 2018 Hi sorry I meant engine not over heating and is running at correct temp 👍 Quote Link to comment Share on other sites More sharing options...
Guest BMW_Mania Posted July 9, 2019 Share Posted July 9, 2019 On 2/14/2018 at 7:38 PM, Appoman said: Hi Jon Nobody replied to my post with a solution, but I may now be able to help you instead The fault was not the DPF sensor, but it was the aircon pressure sensor - replaced that, and all is good. I was only billed for one job too, so have to applaud Audi for that Hope it helps Steve Thank you so much Steve 🙂 Quote Link to comment Share on other sites More sharing options...
Dave ex Posted February 28, 2020 Share Posted February 28, 2020 So I've been through the same thing the engine runs the fan constant until the engine shuts of I've had the dpf cleaned the fan control module replaced and fan switches replaced nothing has sorted it but my local independent garage has been looking into the software's and discovered that there is a software setting that says engine cooling and gives the option single fan and twin and they are set to constant..the main dealership did not even know about this and just charges and a little garage workout it's in the software settings 1 Quote Link to comment Share on other sites More sharing options...
Danny wood Posted February 23, 2021 Share Posted February 23, 2021 I have changed the ac pressure sensor and my fan still kicks in as soon as the engine has started I have booked it in for a regas as I don’t think my ac is working ether not Ice cold I’ve read up that if you have no gas but you have changed the sensor it will still be in error has anybody had to do this to get the fan to stop kicking in straight away a6 avant 2.0d 2010 Quote Link to comment Share on other sites More sharing options...
Danny wood Posted February 23, 2021 Share Posted February 23, 2021 I have changed the ac pressure sensor but the fan still kicks in soon as I start the car and the fault still comes up when it gets plugged in am I right that the fault will stay if there is no gas in the ac ?? Thanks Quote Link to comment Share on other sites More sharing options...
Danny wood Posted February 26, 2021 Share Posted February 26, 2021 On 2/23/2021 at 1:24 AM, Danny wood said: I have changed the ac pressure sensor and my fan still kicks in as soon as the engine has started I have booked it in for a regas as I don’t think my ac is working ether not Ice cold I’ve read up that if you have no gas but you have changed the sensor it will still be in error has anybody had to do this to get the fan to stop kicking in straight away a6 avant 2.0d 2010 Quote Link to comment Share on other sites More sharing options...
Laisor Posted March 21, 2021 Share Posted March 21, 2021 On 2/14/2018 at 12:42 PM, Jonny1971 said: I have A6 2.0 tdi 2010 have same problem engine fan runs whilst engine on but engine not getting hot have had fan control module changed but still have the problem not sure wht to do ? Quote Link to comment Share on other sites More sharing options...
Audi Andy. Posted September 22, 2022 Share Posted September 22, 2022 On 7/9/2019 at 8:13 AM, Guest BMW_Mania said: Thank you so much Steve 🙂 Thank you very much. Having this same issue currently in Sept 22 with my 2010 C6 Avant Le Mans S line 2.0 TDI. so this is good to know. I also have the headlights that like to flicker on and off randomly, anyone experienced this phenomenon? Andy Quote Link to comment Share on other sites More sharing options...
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