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P4040 code that is a non specific code that could be either EGR control circuit malfunction or security shut down mode meaning that the security system is shutting off the spark and/or fuel.
I wonder if your ABS sensor on one of your wheels is bad. That will make ABS light to come on. Mine was a bad wire connection on my back wheel. on one car I had.
Normally this means there is a problem with the ABS. It may or may not mean the pads need replacing and more than likely that is not the problem. Inspect the brake pads to see if they need replacing. If not then you have a problem with the ABS that needs to be diagnosed by a professional.
Check the wheel sensors that detects the RPM to the mother board. if there are faults in the connection, faulty sensor , dirty or loss of wiring then it is possible that the ABS will indicate.
Also a failure of the main unit of the ABS can be a reason.
daewoo/vauxhall astra same fittings.try scrapyard cheaper...airbag light is something else...either get main dealer to check it (m.o.t. failure) or get it removed/take out bulb in dash either way cheaper than replacement.BUT. what price safety.....
There are 4 wheel speed sensors, plus other things that can turn on that light. There are no "cheap replacements", the cheapest thing to do is to pay a shop to properly diagnose it and replace whats bad. That will be cheaper than guesiing and replacing uneeded parts.
its the rotors are warped .. if you are saying when applying the brakes they are jerking in the pedal right ?/ its the rotors are warped and need replaced if this is what you are asking .. your abs should be ok i think its rotors ..
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