Codes P14A6 & P14A5 - MINI Cooper Forum

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post #1 of 6 (permalink) Old Jan 30th, 2019, 03:52 AM Thread Starter
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Hi, I have a Mini Cooper D 2010. Id like to ask about the following codes im getting on my OBD2 software, Torque Pro. The codes are P14A6 & P14A5. I've narrowed them down to either a faulty DPF flow sensor &/or the DPFs exhaust gas temperature sensor. I recently had a DPF specialist look at my car as I was previously getting codes relating to a blocked DPF, but the DPF specialist done a full computer diagnostics on my car & he told me my DFP is regenerating. Having told me that, im now wondering if he actually knows what he's talking about, being that he gave me no clues as to why my car is running rough & throwing out fault codes. He did tell me that he found problems with the cars glow plugs & advised me to get them changed for new ones, so I have 4 new Bosch glow plugs awaiting to be fitted. Im just wondering if I'm missing something with the 2 fault codes above..could they be pointing to something other than a faulty DPF flow sensor &/or a faulty DPF exhaust gas temperature sensor? I've check the flow sensor pipes for leaks & the 3 wired plug that attaches to the flow sensor but as far as I can see..they seem OK. I'm also await a new Carly adapter to arrive, so I can finally get a code or two which actually makes sense to me! <img src="http://img.autoforums.com/site-styles/mini2.com/images/smilies09/yelcutelaughA.gif" border="0" alt="" title="" class="inlineimg" /> Any suggestions would be appreciated. Thanks Mark

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post #2 of 6 (permalink) Old Jan 30th, 2019, 08:18 AM
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Hi, I have a Mini Cooper D 2010. Id like to ask about the following codes im getting on my OBD2 software, Torque Pro. The codes are P14A6 & P14A5. I've narrowed them down to either a faulty DPF flow sensor &/or the DPFs exhaust gas temperature sensor. I recently had a DPF specialist look at my car as I was previously getting codes relating to a blocked DPF, but the DPF specialist done a full computer diagnostics on my car & he told me my DFP is regenerating. Having told me that, im now wondering if he actually knows what he's talking about, being that he gave me no clues as to why my car is running rough & throwing out fault codes. He did tell me that he found problems with the cars glow plugs & advised me to get them changed for new ones, so I have 4 new Bosch glow plugs awaiting to be fitted. Im just wondering if I'm missing something with the 2 fault codes above..could they be pointing to something other than a faulty DPF flow sensor &/or a faulty DPF exhaust gas temperature sensor? I've check the flow sensor pipes for leaks & the 3 wired plug that attaches to the flow sensor but as far as I can see..they seem OK. I'm also await a new Carly adapter to arrive, so I can finally get a code or two which actually makes sense to me! <img src="http://img.autoforums.com/site-styles/mini2.com/images/smilies09/yelcutelaughA.gif" border="0" alt="" title="" class="inlineimg" /> Any suggestions would be appreciated. Thanks Mark
Code : P14A6
Marque : BMW
Description : P14A6 BMW Diesel Particulate Filter System Flow Resistance Too Low
Causes possibles :
* Faulty Diesel Particulate Filter System Flow Sensor
* Diesel Particulate Filter System Flow Sensor harness is open or shorted
* Diesel Particulate Filter System Flow Sensor circuit poor electrical connection

P14A5 - Exhaust Gas Temperature Sensor Short Circuit To Earth
Possible causes
Faulty Exhaust Gas Temperature Sensor
Exhaust Gas Temperature Sensor harness is open or shorted
Exhaust Gas Temperature Sensor circuit poor electrical connection
if you have faulty glow plugs and just driving it on its not going to end well or your bank account, the ecu if there s any fault codes with prevent the regen of dpf filter this causes carbon build up in side the dpf filter until it gets blocked, good luck trying to repair it with that a phone app. need autocom cdp plus or wow snooper also these both give full eobd code meanings and live data and very importantly full function to force regen dpf and to read both pressure sensors ie see how many percent full it is, also has funbtio to tell ecu a new filter has been fitted if you do need to remove and send your off to be cleaned correctly, links below,
https://www.ebay.co.uk/itm/2017-Blue...ika:rk:10:pf:0
https://www.ebay.co.uk/itm/For-WOW-W...frcectupt=true

or bmw own insta pre installed on to a hard drive,
https://www.ebay.co.uk/itm/2018-07-B...wMBe:rk:8:pf:0


Albert Einstein: The definition of insanity is doing the same thing over and over and expecting different results.
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post #3 of 6 (permalink) Old Jan 30th, 2019, 05:38 PM Thread Starter
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Thanks mike1967..il wait until I get my Carly adapter & app set up & running, then check the codes that I get from that. From what I read, Carly can do a forced DPF regeneration but the DPF specialist that looked at my car last week told me the DPF isnt blocked & is managing to regenerate. The more I look in to how to fix this stuff, the more perplexed I'm getting!
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post #4 of 6 (permalink) Old Jan 30th, 2019, 06:05 PM
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Thanks mike1967..il wait until I get my Carly adapter & app set up & running, then check the codes that I get from that. From what I read, Carly can do a forced DPF regeneration but the DPF specialist that looked at my car last week told me the DPF isnt blocked & is managing to regenerate. The more I look in to how to fix this stuff, the more perplexed I'm getting!
but they also told you the glow plugs are faulty and as i have already mentioned the system prevent regen's when there is any fault codes stored in the ecu, and i like they said glow plugs faulty that will do it, have a few people on here buy the carly app then go buy a proper system like the ones i mentioned before, maybe they have updated since, its the live data that helps find problems can tell a lot from what sensors are doing what etc as only fault codes show a fault or sensor picking up another fault, blocked egr valve can cause all kinds of sensors to read one way but the fault is somewhere else. ie egr valve and turbo codes on diesels are linked, also a map sensor might say implausible to find low oil pressure to turbo causing low boost etc, code reader is a ball park tool, where a diagnostics plat form where can read all sensors and control surfaces is the only way to track most fault down

Albert Einstein: The definition of insanity is doing the same thing over and over and expecting different results.
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post #5 of 6 (permalink) Old Feb 2nd, 2019, 07:05 PM Thread Starter
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Thanks again Mike...I now believe I've solved my DPF troubles <img src="http://img.autoforums.com/site-styles/mini2.com/images/smilies09/yelcutelaughA.gif" border="0" alt="" title="" class="inlineimg" /> I unplugged the ehaust gas temperature sensor on the DPF & cleaned the connector. I deleted the glow plug code, the EGTS code & the DPF code I was getting. I drove the 50 miles to work & back again & did a rescan for codes. No DPF or EGTS codes showing & my DPF is at 1.3% which I take it means being nearly zero! <img src="http://img.autoforums.com/site-styles/mini2.com/images/smilies09/yelcutelaughA.gif" border="0" alt="" title="" class="inlineimg" />. I used my new Carly app & adapter to get this info. Cause...dirty/rusty electrical connector! The glow plug code is back again but I now have a new set of glow plugs, so once I fit them...IL be all sorted...with a bit of luck! <img src="http://img.autoforums.com/site-styles/mini2.com/images/smilies09/yelcutelaughA.gif" border="0" alt="" title="" class="inlineimg" />
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