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So after a couple of months using the p38 the fault is still occurring but only when I press the brake pedal and only when pressing the pedal when manoeuvring slowly. Last week I came to the conclusion the accumulator must be at fault and not holding pressure, I changed it yesterday went for a run pumped brake a lot when parking and no abs tc light. Started to drive out of garage today and it’s on again when touching brake pedal whilst manoeuvring, I was going to change abs ecu but didn’t because the problem only occurs when pressing brake pedal lightly. No faults showing on Nanocom, one thing I will say is when abs tc lights come on and traction failure comes up on dash when ign turned off both lights stay on on restart and go off together once speed up to about 5 mph but under normal working tc light goes out once system is up to pressure then abs light goes off at 5 mph like it should. Any more ideas?
Thanks Richard

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Not sure I follow the fault. Until the system is up to pressure, you'll get all 3 lights on (ABS, Brake warning and TC), once up to pressure Brake warning and TC will go out (as long as you have the handbrake off otherwise the brake warning light will stay on until you release it), ABS will stay on until you hit 5mph forwards (it doesn't seem to go out in reverse, or mine doesn't anyway) then it will go out. Are you saying that you get the faults if you use the brakes while reversing but before it is up to pressure but when driving normally, you don't?

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But if that is the case, you do still have a fault. I start mine, reverse off the driveway (so use the brakes then) and drive off down the road. If I don't leave it idling before I start moving, it comes up to pressure and the lights go out as I pass the bus shelter about 50m down the road. I do this every time I go anywhere and don't get any faults.

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Thanks for reply, when I start up the vehicle I wait till tc light goes out before moving off and then abs goes off over5 mph. The abs tc lights do not come on under normal breaking only when light application of the brake pedal occurs. Once the abs tc lights come on and the ignition is turned off the traction failure notice comes on the dashboard. When I start the vehicle again the abs tc lights stay on and the tc light does not go out until the abs goes out at 5 mph and they both go out together.

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So after more searching on the net, I came across an article on Landyzone about what to do if Nanocom kept showing no faults although a fault is still present, this consisted of scrolling left and right on screen and it revealed a fault. This showed front left sensor electrical failure intermittent 18 times. Then further on the article mentioned a fault with the brake light switch where with the Wabco D the Brake switches would either be both open or both closed when pressing the brake pedal. Well I tried pressing pedal whilst watching the screen and under light pedal pressure I was getting no 1 open and no 2 closed, with firm pressure on pedal the switch worked as it should. It is only under light pedal pressure I kept getting the abs fault, new switch ordered and I will address the electrical failure once I’ve hopefully sorted the first problem. Thanks Richard