UK Car Repair Questions? Ask a Mechanic for Answers ASAP
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The faults here sound like a possible burned out glow plug needing replaced as well as a faulty EGR valve or plugged EGR ports.Both of these will have to be checked into/tested further to locate and repair the cause here which can take some time so they are correct on what it may cost to fully diagnose and locate the faulty issues here.
The air bag issue can be a fault with a faulty air bag itself needing replaced or faulty wiring leading to the air bag that the code is set for.I have seen both cause a code like this here in the past.
Unfortunately these will have to be tested further to pinpoint and repair the causes then repaired from there.
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