Herts Hillhopper said:

caznandy You say you had a flat battery. Is it the same battery in the car now? Given you also described the battery monitor connection, it sounds like you have Stop/Start. The battery in a stop/start car doesn’t take kindly to going flat and may not be fully charging and unable to hold its charge. I would suggest checking the battery voltage six or more hours after last drive. It should be precisely 12.6 volts (with the engine off). If it’s down to 12.4 it’s only 50% charged and if 12.2v or less, is failing to hold charge and so needs to be replaced. That almost certainly is the problem... a failing battery will lead to all sorts of randomness, warning lights and odd behaviours. If its still on the original battery in a 2013 car with stop/start, that is pretty good going.

Idea of price (I recommend this company as lowest price and next day delivery -- they were a quarter of the price of EuroCarParts listed price for the battery in my other car!! -- and even their permanent 40% off they still wanted over £200, while Tanya was just £97 all in)
https://www.tayna.co.uk/search/EFB 027 - do check this is correct battery for your car - I think it is, having searched for 2013 model Panda 0.9 with Stop/start

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Herts Hillhopper said:

It might start, but if voltage low, that leads to all sorts of oddness. My Volvo managed to warn for just about everything over a few days... all fixed by changing the battery.

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Herts Hillhopper said:

Let us know the outcome, and if I need to have an edible hat to hand. My view of modern cars and their computer-reported faults is that very nearly always, tbe fault is not whatever the ODB system says it is... it might give an idea of the direction to look in, but every error I’ve ever needed to fix (across a number of cars) has usually been a simple loose or broken wire, dirty contacts or a failing battery. Or, a mechanical issue such as a leaking air hose.

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Herts Hillhopper said:

Glad that’s fixed it. (My hat is safe )
Just sometimes, before rushing to the OBD socket or believing the warning lights, it’s worth just ‘going back to basics’. The computer stuff is brilliant but far from infallible - especially in these times of low vehicle use.

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