20 Most Recent 2004 Volvo V40 Questions & Answers


Has it ever been tuned up ie. Plugs, wires or boots, filters, and injection cleaning? Check the tire pressure, under inflated tires are the #1 cause of poor mileage. Also consider fuel quality and additives that don't contribute to combustion. I hope this helps, Take care.

Volvo V40 Cars &... | Answered on Feb 03, 2019


Probably a spurious count. Reset the ECU and check again if the Engine Check light comes on again. My Volvo told me that the reversing camera malfunctioned. That was true, I haven't got one!

Volvo V40 Cars &... | Answered on Apr 10, 2018


LUCAS is one of the best sold at any parts store. And is made for just that. Read MNFCT recommendations and directions for uses on EGR, PCV and intake manifold build up.

Volvo V40 Cars &... | Answered on Feb 21, 2018


you may want to look at your Catalytic / O2 sensor(s) Watch this video to learn more about how the O2 sensor works and what is required of the O2 sensor for it to work in the vehicle. https://www.youtube.com/watch?v=DvKZ2GDYEz4 Note: The vehicle in this vehicle does not compare to your own since the sensors on your vehicle may not be under your hood but may be on your header exhaust or you could have one on the lower exhaust pipe and one on the upper exhaust / manifold.

Volvo V40 Cars &... | Answered on Nov 04, 2017


Visit the on-line store, know as reliable-store, they have the repair manuals. I'm sure you will get the solution of your problem.
Best Manuals

Volvo V40 Cars &... | Answered on Dec 03, 2016


Have you tried to remove the B pillar to check for a loose clip or any coins

Volvo V40 Cars &... | Answered on Nov 24, 2016


Have you removed the B pillar to see if you have any loose clips or coins ?

Volvo V40 Cars &... | Answered on Nov 24, 2016


CANBUS communication error. There is no reset button. That error will require a mechanic as its electrical in nature.

Volvo V40 Cars &... | Answered on Oct 16, 2016


No there is no reset, if a problem exist in the engine control system then the light will stay on until it is fixed.

Volvo V40 Cars &... | Answered on Oct 16, 2016

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