2008 Daihatsu Sirion 1.3 Auto

I have a Daihatsu Sirion 11 M300 1.3 petrol automatic, registered in 2008, the ABS warning light and the handbrake warning light on the dashboard will not go out. So far I have had the car to the mechanic who looks after it and a local, well established auto electrician, near to where I live, they could not diagnose the fault because they did not have the correct diagnostic tool, I then took it to a Daihatsu dealer who told me that, after reading the error codes, it needed a new ABS pump, which I duly bought (880 GP pounds) they fitted the pump and they told me that 2 error codes had disappeared but the error codes for the rear wheels were still there, codes CO215 CO210 are still showing. I have bought from Autodoc two rear axle bearings with sensor as per the website relevant search, these have now been fitted and the fault is still there, my mechanic and the auto electrician are at a loss, as am I, there is continuity from all the wirings from wheels to ABS ECU, we have a reading from both front wheel of 1.10 and a lesser reading of 0.895 from both rear wheel, when rotated, there has been a ”blink” test performed and the car was run at the required speed and the lights are still on. Can anybody help me resolve this problem, incidentally the interior courtesy lights have stopped working as well at the same time, and all fuses have been checked.
Below is part of the report from the Daihatsu dealer and their suggestions,

New ABS pump fitted. After setting new ABS pump to normal operating mode and clearing codes again,
C0215 and C0210 error codes come back on. Possibility of readings not high enough for normal operation.
Suspect needs new ABS wires fitted to eliminate possible wire fault, if no better
Need rear hub and bearings fitting. NOW FITTED
Problem added: Feb 21, 2022 (4 months ago)

Daihatsu Sirion 2008
Variant: 1.3 Auto
Problem Category
Steering, Suspension, Brakes, Wheels & Tyres
Electrics, ECU, Warnings & Lights

Replies and fixes

Remember hearing of this before over the years as it was quite common but never heard of anyone with the solution unfortunately
Answered Feb 21, 2022 (4 months ago)

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