P0343, P0348 Camshaft Errors

[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

[turquise1]

After doing some reading about DME and other relay issues, I have replaced both of them as well but no improvement.

Basically, every time I crank the engine I get the same errors. When I check with a scanner (as it cranks), I see 0 on both camshaft signals..

Any other ideas?

Thanks,

Ozzie

[RocketyMan]

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

So if I'm interpreting this correctly, you checked the wiring from the sensor pigtail to the DME?

..

How?

[turquise1]

Originally Posted by RocketyMan

So if I'm interpreting this correctly, you checked the wiring from the sensor pigtail to the DME?

..

How?

Pin 2 on both sensor connectors which gets the signal from the sensor (switches from 12 to 0V when exposed to metal on pulse wheels) goes to X60003 connector (pins 19 and 20) on DME. I have traced both with a multimeter. There is also voltage on pins 1 and 3 (12V) at the socket which comes from DME..


Thanks,


Ozzie

[turquise1]

The reason was, each timing wheel was slightly off. After adjustment, errors went away..


Thanks,


Ozzie

[RocketyMan]

OH cool...so its fixed?

[turquise1]

Originally Posted by RocketyMan

OH cool...so its fixed?

Yep, tested it a couple of times and no more errors. It was only a 1mm or so off center. I actually used German Auto Solutions tools which are supposed to be very accurate for timing so I am not sure how I made such a mistake..



Thank you for your help..


Ozzie

[RocketyMan]

Wow--That seems very sensitive! Good to know when setting the timing.

Thank you for reporting back!