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[MaxV6]

1,  5,  4,   10   
1,  5,  3,   10

10

someone want to tell me what error code i should be looking up ?  (it's an astra ,  but past experience tells me the reading of the codes is the same,  just need to be looked up on the right engine / car code sheet.  )

damn thing will not start.....   was running fine yesterday.

[aaronjb]

I suspect the 10's are at the wrong end and that should be P0154 and P0153 - both are O2 sensor codes (former is 'no signal' and the latter 'slow response').. assuming this is a car late enough to be using OBD codes, of course.

[feeutfo]

Most engine codes seem to start with zero/10 flashes.

Ime it helps to video the flashes, then you can pause, write down, play etc.

[MaxV6]

i am confused by the lack of a long 10 sequence at the start, (could just be lack of familiarity)   the 1 is definitely the first flash i get....   

[aaronjb]

Always a chance that it's not flashing OBD codes but proprietary ones - what age Astra is it?

Hopefully someone with Astra specific knowledge will be along in a bit..

[MaxV6]

i wrote down the flash sequence....    i'm used to doing similar things for work...     dfinitely 1,5,4,10 ,  1,5,3,10,10

[feeutfo]

Code seems common via google, is it a Diesel?

[aaronjb]

I see 1530 and 1540 listed as more than one description searching specifically for Astra stuff, IIRC anything with a number that high is in the "Manufacturer makes it up as they go along" range though?

[MaxV6]

Z16SE    engine  petrol 4 pot...

codes i have for it are all Aircon related.....  which surely wouldn't stop the thing from starting up?

[TheBoy]

OBDII are in following format...

Pnxxx

P=drivetrain
n=0 for "standard" OBDII, 1 for manufacturer specific
xxx=rest of code

[Entwood]

This is a useful site for decoding DTC's .. even the manufacturer "specials" .. although I have no idea how accurate some of them are !!

http://www.obd-codes.com/trouble_codes/

unfortunately being a Canadian site it seems to ignore some European makes

This site

http://www.engine-light-help.com/gm-trouble-codes.html

lists 1530 and 1540 however .. might help ??

[TheBoy]

i wrote down the flash sequence....    i'm used to doing similar things for work...     dfinitely 1,5,4,10 ,  1,5,3,10,10

A/C clutch and/or A/C pressure, according to TIS. Doubt it would affect much.