C230ontheroad

Hi new to the forum here. ..

I hsve a 07 C230 sport which I purchased about a year ago. Recently, within the last couple of months, the vehicle has become extremely inconsistent with starting. What I mean by that is... Sometimes it stars, and sometimes it doesn't. I never know when I go to turn the key. My moms boyfriend (a mechNic) keeps getting an error code that reads P0607. Not sure what that means. Since he doesn't speak English communication is hard. Anyway, any advice on how to get this issue fixed?

Glyn M Ruck

Welcome.

P0607 = Control Module Performance. See starting procedure below. With this code the most likely culprit is the CPS (crankshaft position sensor) needing replacement. We hope it's not the ECU.

Also ensure that fuel pressure at the schrader valve on the fuel rail is minimum 3.8 bars WHILE CRANKING.

https://mbworld.org/forums/c-class-w...t-process.html

CathalGildea

Hi, Im sorry to bump this thread but I have a similar problem,

My car will start fine but shuts off while driving for no reason, no error codes or anything, had it on star, no luck.

I was planning on replacing the crankshaft position sensor.

car stalls while driving and will restart straight away,sometimes it take a few seconds to restart.

The today after 2 months chasing this problem the car gave a error code:
P0607 Control Module Performance.

I am hoping this is related to the CKP and not the ECU?

Anyone seen anything like this before?

Thanks

Glyn M Ruck

Check fuel pressure.

CathalGildea

Will do, what should fuel pressure be at idle 50psi?

CathalGildea

fuel pressure at idel 760rpm is 3400-3500 PSI. when u crank the engine it jumps to 3900, then goes back to 3500, engine nearly at full temp.

is this pressure low or ok? when i rev it the pressure increases to 100PSI++++

I am getting these values from a OBDII scan tool

Thanks

edit: ambient air temp is reading -7.6F, would this have anything to do with it? also when i plugged OBD back into car there was another code but its gone now, the code was U1401

Chrysler: Implausible Engine Speed Signal Received
Dodge: Implausible Engine Speed Signal Received
Jeep: Implausible Engine Speed Signal Receive

this ^^ is all i could find on the code

turbonos7

Those pressures are definitely wrong as in they cant be that high... you should be seeing 40-50 psi... not thousands! unless you miswrote them. Air temp is also wrong... Hopefully Glyn can get back to this thread and shed some light....

turbonos7

Oh and BTW, Glyn did say to check the fuel pressure at the schrader valve...

CathalGildea

i think fuel pressure could be ok, its a diesel so that's why the pressure is so high. Unfortunately I dont have any equipment to test pressure at schradar valve.

yes the air temp is not right its jumps from the top of the range 80oC to -40oC, but it dont think this would cause a problem, i think the air temp is only an indication and doesn't control anything?? I'm probably worn here

thanks for reply

turbonos7

Oh, a diesel....well that changes things just a bit. I didn't see that written anywhere.

Either way air temp is still not right and it actually is pretty important, second to coolant temp which the engine uses to determine how much to enrich the fuel mixture. Basically, the engine computer is mapped to run at 0% enrichment in the coolant map at normal engine operating temp (this is a coarse adjustment) and then secondly it looks at air temp to help determine the density of the air coming into the engine and trim the mixture further (fine). This works together with the MAF to get a more accurate measure of exactly how much air the engine is ingesting.

CathalGildea

Thanks for this information, I didnt know this,

Anyway, i've replaced the CKS (crankshaft position sensor) and so far so good, so hopefully this solves the problem,

Glyn M Ruck

You said it was a C230 Sport ~ not a diesel!!

Fuel pressure s/b >3.8 bar or 55 psi.

VVF

Glyn, that's a different guy The OP had Sport. Look at his info on the left

Glyn M Ruck

Sorry ~ now I've noticed. I did not expect a diesel question in a gasoline thread. I shall be more attentive in future.

Craig Borrett

I changed the crankshaft position sensor when code the initial code came up. Once replacee, P0607 is coming up and the vehicle won't start at all...any guidance appreciated!

06SL500AMG

Did you find a solution?