Originally Posted by turquise1

Hi there,

I am trying to figure out a way to fix a recent P0343, P0348 errors..

Basically those errors started happening after I did some valve work. I am in the process of starting the car (I have not attempted yet because of the errors), right now only cranking. What I have done so far:

Firstly, engine is properly timed,

- Replaced the sensors with good ones,
- Tested crankshaft sensor and it tests good (I can see the RPM from my testing computer cranking around 180 rpm),
- I can see using a voltmeter that both sensors send pulse (pull down from 12v to 0 each time it detects the metal part of the pulse sending wheel)
- Tested to see if the signal goes all the way to DME (ECU) and it does,
- Replaced the DME and same errors appeared so the DME should be ok,

Not sure what else I can do at this point. My only concern left is the slightly low battery power as I crank which shows around 11V. Would that affect the DME (ECU) recognizing the signal coming from the sensors?

Thanks in advance for all the help,

Cheers,

Ozzie