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• Peugeot 306 (1993 - 2001) - 01 2.0 Resetting an HDI ECU 30 Jun 2010 (Forum)
  This confirmed my thoughts with error messages relating to intermittent accelerator sensor problems listed in the ECU (sorry didn't note the code nos). The ECU was reset through the diagnostic system and the issue disappeared - all fine and dandy apart from the fee that is. Today the engine management light was on again, but nothing irregular about the idle speed or anything else come to that - the car runs normally in all respects.
• Peugeot 406 (1999 - 2004) - 03 2.0HDi Car not starting 6 Aug 2009 (Forum)
  The contacts for the regulator on the old pump were blackened, which suggested the solenoid had overheated. The car ran for three days, then same fault reoccurred. Suggestion of dry joint in the ecu output to the regulator (pulsed earth), so ecu was changed for a refurbished unit. Ran perfectly for around three days, then back to the original fault. All wiring has been checked etc, for some reason, appears ecu is shutting down the engine.
• Renault Modus - ECUs blown after jump start attempt 19 Oct 2017 (Forum)
  Several weeks pass by whilst they try and repair the car (my sil was in no rush for the car back and the owner of the garage said he would be lenient on the bill if she was patient with them).  The assessment is that the main ECU was faulty and this was duly replaced with a new one.  This still didn't cure the problem and they sent off the steering ECU for repair (I think it was BBA REMAN).  The news back from the repairer is that the main ECU and the steering ECU are both blown.
• Wheres the ECU in Volvo S80? 7 Jan 2005 (Forum)
  Anyone know where the engine control unit on an S80 is located? I've looked in the engine bay, in the passenger compartment and in the boot but can't find...
• Zafira X18XE1 auto '99 - Central locking ECU 24 Oct 2011 (Forum)
  Now, I know I'll need to prise the security code out of my local Opel dealership but are there any other pitfalls in swapping the thing I should look out for? Is the keychip/immobiliser pairing also the province of the C/L ECU or is this held elsewhere?
• Peugeot 807 MPV (2003 - 2010) - 04 2.0HDi Where is the fuel additive ECU ? 1 Mar 2009 (Forum)
  I am in the midst of a "Minimum Fuel Additive Level" situation now and the dealer's dignostic report has many faults including the Fuel Cap Sensor and Fuel Additive ECU. Since there are so many faults I suspect a wiring / connector problem. Can anyone tell me where the Additive ECU is located? I would like to check out the connector and also check the fuel cap sensor at that end of cable.
• Golf 2 ECU Probs? 14 Oct 2004 (Forum)
  Having had to change the ECU on the car approx 6months ago, it's showing the same symptoms once again. On attempting to start the car from cold, it is turning over a number of times before eventually struggling to start. Then once started, it will struggle once or twice before running as normal, ticking over fine.
• Golf ignition failure problem. 5 Jun 2003 (Forum)
  Local VW dealer and local independent unable to diagnose despite having all the fancy gear. Owner has found that if he unplugs and replaces the plug to the ECU, vehicle will restart immediately. ECU is Siemens 5WP4-256 ( 037-906-125R ) Does this ECU have some form of immobilizer circuit that may be mall functioning and is it safe to do a substitution test with an identical ECU from a near identical vehicle ?
• Toyota Aygo - Ecu replacement or not 12 Aug 2021 (Forum)
  If swapping a bare engine ..all wiring and sensors back to original positions will the engine run without replacing or re setting the Engine management...
• KIA Ceed CRDI 2.0l Sport 2009 - Lack of performance after mandatory ecu upgrade 15 Jun 2019 (Forum)
  Hi, after a main dealer ecu update the performance has dropped off alarmingly and the drive is very disappointing compared to previously.Max torque before was from 1800 to 2000 rpm, I don't know where it is now for there is no 'wow' acceleration factor.
• Ford Galaxy 2.0TDI 2010 - Galaxy 2010 - ECU problems caused by speedo? 27 May 2015 (Forum)
  Things like brake light bulb and ABS - nothing wrong with either. MEchanic says known problem with speedo and ECU. £800 to replace or he can repair for £200. Anyone heard of this?
• 
  Do ECU tunes work? 18 Sep 2012 (Ask HJ)
  Regarding ECU tune-ups. Do they increase the power/ torque/ mpg as stated? Are they worth the investment?
• Ford Focus (1998 - 2004) - 1998 - Immobiliser/Key/ECU reset 20 Jan 2009 (Forum)
  Just had my 1998 Ford Focus towed to the Ford Dealers by the RAC as the immobiliser is frozen on and all the codes lost in the key and ECU unit. Radio display says "CODE --------". Any ideas how much it will cost to have it all reset and a new key? Also, is it a big job as I need my car more than my wife, lol. Fed up!! Any help much appreciated.
• Vauxhall Vectra B facelift (1999 - 2002) - 1999 2.0 ECU error codes 18 Aug 2008 (Forum)
  Hi all new to this, i have a vectra 2.0 petrol 1999 t reg, Having some problems ecu light on all the time idle poor and only revving to 4500rpm, have done the paper clip trick and have a number of codes, camshaft sensor, intake air temp sensor and Hego oxygen sensor can anyone advice on this as i am having a right nightmare with it.
• Peugeot 406 ABS ECU 7 May 2003 (Forum)
  I booked the car into our local Peugeot dealer who have just called me to advise that the car needs a new ABS ECU at a cost of £ 490.- plus labour and VAT. It's going to cost the best part of £ 700.-. I'm stunned. Do I have an option on this or have Peugeot got me "over a barrel". Any comments would be much appreciated.
• Peugeot 207S 1,4CC- 2008 - Peugeot 207S 2008 water in ECU problem 23 Feb 2018 (Forum)
  Peugeot 207S 2008 water in ECU problem You     15 minutes ago I have a Peugeot 207 1.4S 2008 with water getting into the ECU causing the car to constantly come to a halt. I bought the car 6 months ago from a 2nd hand garage and the problems started in December.
• Citroen Xsara - Citroen xsara ? ECU fault 13 Jun 2012 (Forum)
  I get the feeling I am being fobbed off because they do not really know what is wrong so they just want to replace the whole ECU as an easy option. Ta Clare
• Vauxhall Astra G Diesel - Vauxhall Zafira 2.0 DTI ECU/Fuel Pump Problem Help 7 Oct 2010 (Forum)
  After 4.5hrs he goes back to the laptop and its frozen! Has anyone been able to reprogramme an ecu using OPCOM? I read somewhere that an ecu has to be 'unpaired' from the donor car prior to refitting on another. Can anyone help, are we trying to solve a problem that isn't solvable with OPCOM? He's getting desperate so any advice, pointers or step by step guides (!)
• Focus Fast Idle Problems - ECU ? 8 Nov 2004 (Forum)
  Also sometimes it is reluctant to start from cold, it starts but it's like it's not getting the cold start enrichment (?) Now I've heard talk of problems with some early Focus ECUs, can anyone shed any light on this and give any pointers so that I can get it fixed. Thanks Very much Bobby
• Rover 600 Turbo Diesel Ecu 9 Mar 2004 (Forum)
  Diesel injection pumps used to be contolled by rods and visible thngs! Am I right in thinking that all functions of a pump are now controlled by an Ecu, and any faults are only repairable by someone with the software/reader etc to read the faults. My Rover 600 Diesel runs beatifully most of the time but just recently has started to almost stall on roundabouts etc and the yellow engine warning light comes on., then it will pick up again and run for a day or so without occyuring again...