Preventive maintenance

Preventive maintenance

It is important to keep your vehicle safe throughout the year. That’s why at Donnellan Auto we offer round-the-year to keep your car in up and running. Our technicians take about 30 minutes to do a thorough evaluation of your car and provide you with a written copy of the report on its completion. If we identify any issues you are under no obligation to leave your vehicle with us, but if you would wish otherwise would be happy to provide a quote.

EGR Valve Failure.

1.6 HDi vehicles with engines developed by the French PSA group. Currently these engines can be used in Citroën and Peugeot 1.6 HDi, Mazda 1.6 MZ-CD, Ford 1.6 TdCi and Volvo 1.6D.


  • Sometimes the engine does not start or it stops while on the move.
  • The engine warning light stays on constantly.
  • reading of the fault codes, the following stored codes may be detected:
    • P1586 – Throttle Control Unit – Supply voltage too low
      • For those vehicles in which the power supply of the throttle position sensor is independent, the fault code that will appear will be P1586.
    • P0698 – Sensor reference voltage C-Circuit Low
      • In the case of the fault P0698 – Sensor Reference Voltage C – Circuit low, it consists of 5 V power supply from the Engine Unit to a few sensors the most likely problem is the EGR valve is internally shorting the 5 V supply from the engine control unit.
  • Some other fault code may appear, but it will probably be caused by the engine stopping.

Depending on the engine, the causes of failures can be different.

Electrical testing must be carried out before condemning the EGR valve.

Donnellan Auto Services covers all your car’s needs and ensures that it gets back to its optimum power and performance. We are a professional car service centre that functions independently, based in Oranmore Business Park, Oranmore, Co. Galway.

Top Reasons to Choose Us

  • Personalised Service Supplier - A genuine alternative to the franchise dealer
  • Donnellan Auto Services provide a 24/7 Call out and Recovery Service
  • Free Collection and Delivery Service of vehicles within the Galway city area within 5 miles from Oranmore.
  • All servicing is carried out at Manufacturer recommended service intervals
  • We are member of SIMI which means we:
    • Only allow appropriately qualified staff to work on a vehicle
    • Keep all old parts that are replaced for a period of time and educate the customer as to what work was completed
    • What is quoted is what is charged. There will be no increase from the quote unless additional work identified by the garage is authorised by you.
    • We carry out a service to the standard recommended by the Manufacturer.
    • Use only original parts or parts of matching quality.
  • A Comprehensive Service History of all vehicles is kept on our data base
  • DOE(CVRT) tests arranged and preparations carried out.
    • We have an excellent working relationship with all local DOE (CVRT)test centres.
    • The Galway Truck Centre, JJ Flemings, Burkes Brothers and Leahy's Garage.
  • All estimates and repairs are compiled using standard published repair times
  • Air-Conditioning Servicing and Repair
  • 3D Wheel Alignment System
  • Electronic Diagnostic Services - Auto Logic - and more
  • OEM Quality Parts
  • Total and ELF Oil Products
  • We only use oils that are approved by the vehicle manufacturer

Get in touch

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Oranmore Business Park,
Co. Galway,

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