P1122 P1126

Hi there. Any assistance with my issue would be greatly appreciated.
I have the engine light on and P1122 and P1126 errors showing. Car will idle at near 2000rpm, and will not rev above 3500rpm.

I have tried a replacement IPDM, but the same problem persisted.
I have tried a replacement accelerator pedal, but nothing has changed.
I have been through the idle relearn procedure, engine light goes off momentarily before returning with the same symptoms.
I have cleaned the throttle body.

Anything else I can try?
Would a replacement ecu kit (IPDM, key, ecu, etc) likely fix this?

(may be of no relevance, but the main fuse attached to the positive battery terminal is blown and has been replaced with a thick copper wire. Surely this has nothing to do with my problem?)

Many thanks.
 
well this sucks, I have this exact problem. It's always the problem I have which gets no reply! 🤣 Car was standing for 2 years (sisters car and she was poorly). 2003 only got 20k on the clock.

My main fuse was blown too! P1122 and p1126. I've changed the IDPM and got it recoded.
Same issue

Foot flat on the accelerator and revs slowly rise to 3000. Max speed on road is about 20mph 😆.

I've taken off and cleaned the throttle body.

Tried following the relearning process.

Out of ideas, anyone have any before I scrap the car.
 
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