tjohnson32

I have a 2004 lexus sc430 that will not start. The car doesn't even turn over. It has been sitting for about 5 months and before it sat the car started and ran. I ran the codes on the obd2 and this is what came up

P0345 Camshaft position sensor A circuit Bank 2
P1340 igniter circuit malfunction (No. 8)
P0340 Camshaft position sensor A circuit bank 1 or Single sensor

It seems that the camshaft sensor might have gone faulty and need to be replaced, my only problem i see is that when the codes are cleared I would expect the the engine to at least crank and then not start (crank to get a reading on all positions etc). But i am not getting any of that at all.

Has anyone had this problems and is it normal for Both camshaft sensors to go at the same time? Also I have been looking for a article on camshaft sensor replacement and have not found one at all, if anyone has done the replacement and wrote up a article that would be helpful.

thanks,

Raven01750

That sounds like an awful lot of failures for a car that was running fine when it was stored. Not turning over at all is telling too. Im sure you have a fresh charge on your battery but it might be a good idea to take it in for a load test if thats possible.

We have another member who had a mouse or rat chew through some of his wiring while his was stored. I would suggest you pull the engine cover and inspect as much of the wiring as you can and crawl around underneath to see if you might have something similar going in. Look for nesting materials that they could have drug up under the manifold etc.

Paul

tjohnson32

honestly we have tested the battery load, The first thing I thought of when seeing the codes was exactly that a rodent chewed thru the harness as it was stored outside. I dont see both sensors going at the same time, although I should check if there is any resistance in the sensor wires etc before buying new sensors.

VVTiBob

Agree with Paul, too many errors probably a wiring issue, that is a rat chewed through some. I’d be looking in the area of the engine compartment main ECM. While this may not apply to our cars, newer cars have a new attractant ....https://www.caranddriver.com/news/a2...hink-is-tasty/

Bgw70

Hope you didn’t jump timing...or break a timing belt.

Raven01750

He stated it wont even crank. His description pretty much screams a rat or squirrel ate my homework err wiring! LOL.

Paul

Bgw70

yep, just providing another possibility

also, not sure how his battery had a charge after five months.
a weak batt will not crank our engine

DshngDaryl

Even though I agree it sounds like a rat wiring issue, it might not be.

If it was a ford, it would be an alternator diode issue
https://www.justanswer.com/ford/7n7t...45-wiring.html

Raven01750

Well I was just tossing out an idea. As an electronics tech, to have that many failures simultaneously indicates an electrical issue. And since he stated that it was stored outside, I threw in the squirrel for good measure. 😉

Besides, Bob is the one who threw out Tofu wiring insulation! LOL. Heck, we could both be right. 😁

Paul

Bgw70

I would agree it most likely is wiring but trying simple to more complex is the way to go.
if We let our cars sit for five months, the batt will be dead or very close to it.
I would do the following.
-remove the engine cover and inspect for rodent damage...if they moved in, there most likely will be smells and visual clues.
-if the batt still had some life, I would either jump the car with good quality cables or put it on a charger.
- - or just use a known good batt, if available.

- if no signs of rodent damage and a good batt didn’t correct, then I would make sure the TB didn’t break and a piston is wedged against a valve!
the starter should click.

is install a known good battery from another car