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Usually if any of the other sensors are going they may trip a code on the OBD system. You mentioned that your getting code 1-1-1 which is telling you everything appears normal on the system.
It is not uncommon for the cam and rpm sensors error codes come up on the system when the fuel pump is going and when people replace them.. nothing changes. In your case this is not happening.
My theory is that you should be replacing the relays for your fuel pump regularly, so if it is not gone..it will go eventually if you already replaced your fuel pump.
Besides it is a lot cheaper than replacing the cam sensor and the rpm sensor and since you have to replace them anyway....
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