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Matt
Matt, Mechanical Engineer
Category: Car
Satisfied Customers: 20583
Experience:  BEng hons Mech engineering, in auto industry 22 years
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My C3 Citroen OV 54EZF yesterday beeped the orange autodiagnosis

Customer Question

My C3 Citroen OV 54EZF yesterday beeped the orange autodiagnosis light twice and then stayed on for the*****home. My nearest Citroen service garage in Aylesbury is only open for sales today and didn't feel competent to give me advice. I want to go to Somerset today, about 150 miles. Is it safe to do so? In my book it says the light means a fault with ignition, fuel injection or anti-pollution system according to country. Can you advise?
Submitted: 1 year ago.
Category: Car
Expert:  Shantal-Mod replied 1 year ago.
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Expert:  Matt replied 1 year ago.
Hello

Do you still need help?

On any car if you get a check engine light or other fault light this typically means one or more of the sensors has failed or has a faulty connection.

The fault can be something quite simple and nothing that’s going to stop the car to something quite major that will reduce engine power and possibly stop the engine

The ECU senses this and may put the car into 'limp home' mode which typically limits the revs and the amount of power available. Usually the car is safe to drive for a short distance as the mode is intended is intended to get you home without incurring any engine damage

The quickest route to repair is to have the car plugged into a diagnostic machine which will read off the fault code stored in the ECU (providing the light is still on at this point) and indicate which sensor has failed or whether the fault is more serious.

You can do a very rough and ready check yourself by unplugging sensors one at a time and seeing if any of them change the driving condition which would indicate the most recently unplugged sensor is the faulty one. This method is not foolproof though and reading a fault code off is the better method.

Expert:  Matt replied 1 year ago.
Hi

do you still need help?

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