Citroen C5 mk1 3.0v6 errors p0221, p0223, p0226 ,p0228

[fryko112]

hello, for half a year I have been trying to fix the problem with gas / throttle pedal errors. I replaced the gas potentiometer, the throttle, but it did not help, I replaced the engine controller, and then for 2 months the error did not return. now the error appears again, before it only lacked power when the error appeared, now it still sometimes does not respond to the accelerator pedal, I have the following errors: p0221, p0223, p0226, p0228, where to look for the problem? electric harness checked

[darbuck]

You also have a bad O2 and catalytic converter these will result in bad throttle response aswell I would try to sort them out first, the codes related to the pedal might be misdirection by the ECU.was the new ECU updated to your cars parameters. Were the other faults on the old ECU. You seem to have more than one issue going on here post up all the fault codes to get a better picture.