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• Citroen C4 1.6HDi 90 Diesel CRD VTR - Anti Pollution Warning Faulty ECU / HP Pump Sensor 11 Sep 2013 (Forum)
  Before we had chance to collect the car, they contacted us again to say that the car wasn't fixed as it was still cutting out. They are now saying that we need to replace the ECU as it is intermittently dropping the supply voltage to the sensor.  They are also now saying that they had to replace the sensor first as it cannot be tested separately.  It seems to me that they misdiagnosed the fault and are now lying to us to get us to pay for the sensor as well as the ECU.
• Chrysler Grand Voyager - is it ecu 15 Aug 2012 (Forum)
  all help greatly appreciated as i have to now do some roadside mechanics. as i am on a tight budget and a transporter is not a financial option as an ecu is more important          
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  ABS light on a Peugeot 207 29 Jun 2012 (Ask HJ)
  I have a 2007 Peugeot 207 1.4 Petrol with 17,ooo miles. I have a fault light on saying fault with ABS. Diognostics check revealed ABS ECU fault. Have checked...
• Skoda Fabia Elegance 1.9 TDi - Alternator? ECU? 2 Jan 2012 (Forum)
  I have bought a new alternator now, but am wondering if that is the issue; I certainly don't want to use it if that is not the problem.  I have heard it could be the ECU, but I am unsure how to check that. And do I have to go to a Skoda dealer to have the ECU checked, or...?   I am, obviously, not a Happy Camper, having heard all this great stuff about Skodas before (being part of VAG).
• Citroen C3 Stop Start Auto 5 door 2005 - Problems with the ECU, Actuator and Car hopping 29 Jul 2010 (Forum)
  Put it on diagnostics, uopdated car computer and all the lights lit up, dealer stated that it needed a new actuator and probably would need a new ECU but did not really know what was wrong with it. Took it to an independant Citroen Specialist and he fitted a new actuator and an ECU, then he took the actuator off as it was not needed, however all the cars ignition lights came on and after diagnosis these were resolved exceptng for the battery ignition light staying on.
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  Chip shock 5 Jun 2010 (Ask HJ)
  I got my Peugeot 406 2.2 diesel coupe ECU remapped in October. It didn’t run very well at all until I cleaned all filters. Now she will run 100% for about...
• Rover 400 (1995 - 1999) - 96 1.4 ECU fault question 8 Jul 2009 (Forum)
  Hi iam the proud owner of a rover 414 ! The car let me down a few months ago and i traced the fault to the black/ violet wire on ecu not triggering the fuel pump relay to run . apparently this is a fairly common fault . I studied the wiring diagram i have and decided to earth out this wire permantly to save getting the ECU repaired.
• ECU problem - Hyundai Accent 1.3i 5 Mar 2006 (Forum)
  I took the car to my local mechanic who after three hours (£140) of testing told me that he could not isolate the problem,saying it was a very strange problems and not one he had come across before but then thought there was 85-90% chance it was ECU failure. I asked about the coil pack and spark plugs and he insisted that this had been tested. ( Iasked this after being told a friend!) Do you think that an ECU failure is likely ? and how much do you think it would cost to repair- he was quoting me £648 parts and £40 (1 hour) labour.
• Vauxhall Vectra - ECU replacement 30 Aug 2021 (Forum)
  The car is 13 years old but it has only done 67000 miles and is ln great condition so I'd like to know whether it is worth getting the new ECU fitted. About a year ago one of the windows was left open and a lot of water got in. One of the electric windows wont open so would that be corrected if a new ECU was fitted. As you can see neither of us has a clue about car mechanics.
• Vectra 1.8 ECU 13 Apr 2006 (Forum)
  We changed the CTS and took car back to garage to have code cleared but it wouldn?t. We were advised that we needed electrical check done which we did. We were told that the ECU was giving out the wrong messages and we need a new one and also the coil pack code had showed up again. Contacted local Vauxhall dealers and given a scary price of £742 for new ECU! I asked if we got a brand new one ourselves would they fit it for us (trying hard to save some money!)
• fiat punto ECU light and coil packs 11 Feb 2005 (Forum)
  I replaced the coil pack on Friday but on the motorway again this morning the ECU light started flashing at me again, there are no other symptoms no loss of power etc. Has anyone got any ideas as to what could be wrong? If there was a problem with an HT lead or spark plug would my ECU light be flashing?
• Vectra intermittent ECU fault light 11 Sep 2001 (Forum)
  Are there any Vauxhall experts out there who can perhaps advise me. My high mileage 96p 2.0SRI has an intermittent fault with either the ECU or one of the transducers. The problem initially started some eight months ago as an intermittent failure to idle which was sometimes accompanied by the ECU warning light. The engine would usually restart without problem.
• KIA Carens - Kia Carens diesel 1.7litre 2014 fuel filter 15 Jan 2017 (Forum)
  Hi Just looking for some advice on changing fuel filter on above car. It is in behind battery and ecu. Do you need to remove the air filter box, battery and ecu to get access. Appreciate any help. Thanks Matt
• Ford Fiesta (1995 - 1999) - 97 1.4 reset the ECU 14 Feb 2010 (Forum)
  When you have had the battery off for half hour and then run the engine for 20 - 30 mins at idle - Is it important to switch off then take it for a run...
• Jump starting issues on post 57 plate cars 5 Dec 2009 (Forum)
  Is it true that cars 57 and onwards cannot be jump started, and if they are you risk a very large bill for a new ecu. I have heard stories of upto £5k. I don't know how true this is. What technical reason could there be for a jump start blowing the ecu?
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  What maybe the fault when connecting the battery terminals wrong way round 8 Jan 2013 (Ask HJ)
  We have a 2002 Peugeot 307 Rapier. It had been running fine but finally a day came when it started showing up anti-pollution fault. We got it checked but...
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  How can I fix the issue with the MAF sensor? 3 Jul 2024 (Ask HJ)
  When the air mass sensor on my car is plugged in, it drives terribly, goes into limp mode before 3000rpm. When the sensor is unplugged it drives okay....
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  Thanks for recommending ECU Testing for an ABS pump repair on my Jaguar XKR. 21 Dec 2013 (Ask HJ)
  Thank you for your recent pointer to ECU Testing (www.ecutesting.com) to fix my Jaguar XKR ABS pump circuit. My total outlay for the repair, carriage and...
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  Remapping ECU 6 Nov 2011 (Ask HJ)
  I am an OAP and the ever increasing cost of fuel is a concern to me. I have read various articles on ECU re-mapping devices, all of which claim to enhance...
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  Can an aftermarket ECU cause DMF failure? 22 Oct 2014 (Ask HJ)
  I own a 2010 SEAT Alhambra, which has suffered a dual mass flywheel failure. The car has covered less than 35,000 miles and has a full service history....