Code P1637?

Post by **myglaren** » 29 Dec 2010, 12:17

Car seems to have been getting worse lately. The EML on constantly, “Antipollution Fault” pings up on every startup.
Still no turbo below 3,000 revs and sometimes more. Often revs limited to 2,800.
No power when cold – one day I couldn't get it over 15mph until it had warmed up for five minutes. Gradually increased to 30mph then shot away, revving easily up to 4,500 and plenty of boost.
Hasn't been helped by the handbrake cables seizing up and burning out what was left of the pads.

We took my son's 306 to get the blower sorted today. Naturally it burst into life for the first time in two weeks as we pulled up outside the garage. Guy fixed the loose wires and lubricated the bearings but it will need a new fan eventually. It will be going in for some welding and a few other bits ready for it's MOT.

While there the guy read my fault codes – he has a Snap-On code reader.

P0100: Mass Air Flow sensor 'a' circuit.
P0101: Mass Air Flow sensor 'a' circuit. (Blockage/leak in circuit)
P0335: Cranckshaft position sensor*
P0401: EGR valve – poor flow.
P0426: Turbocharger
P1637: No info on this code**

Quite a list, which he reset then I took the car for a blast on the motorway. Went much better than recently and on return and having the codes re-read the only one still there was indicating a MAF problem.
Going to replace the MAF and see where we go from there. He can get a new kosher Bosch MAF (OE) at a discount

.
I'm sure a replacement MAF won't be the end of it though.

* Probably caused by stalling the engine trying to get out of ice ruts a couple of weeks ago.
** Citroen specific code. Anyone any suggestions?

(May be “CAN link ECM/INSTM circuit / network malfunction “)

I'm not altogether convinced and he has just phoned to say the the MAF is £101+VAT. Going to check with the local dealer as I believe they were about £85+VAT from there.

Post by **myglaren** » 29 Dec 2010, 13:02

Just been out in it.
Poor performance back, along with the antipollution message, lousy acceleration while cold, a load of grey smoke accelerating on an up ramp at 30mph (max speed for first two miles).
Revs die off at 2800 again.

citronut · Post by **citronut** » 29 Dec 2010, 16:17

have you got access to service citroen Steve, if not post the last 8 digits of your chassis/VIN No. and i will look it up for you, and get price and part No.,

then you could aim the part No. at either FUEL PARTS
( http://www.fpuk.co.uk/main/indexfuelparts.asp ) or your local factors,

regards malcolm

Post by **myglaren** » 29 Dec 2010, 22:42

Thanks Malcolm. Couldn't spot anything on the fpuk site and I can't remember my login to Service Citroen.

I'll have a scrounge around and try and find the VIN. God knows where the documentation is though.

Should get an email in the morning from the dealer. Was too lazy to drive down there, my excuse being a birthday party for a grandson.

My main query is the error code though - anyone any suggestions.

VertVega · Post by **VertVega** » 29 Dec 2010, 22:59

Nothing new on this error code

but check pm

Post by **myglaren** » 29 Dec 2010, 23:03

Thanks VV

citronut · Post by **citronut** » 30 Dec 2010, 09:32

your chassis/VIN No. is in the little window on the windscreen isn't it,

regards malcolm

Post by **myglaren** » 30 Dec 2010, 15:11

citronut wrote:your chassis/VIN No. is in the little window on the windscreen isn't it,

regards malcolm

Probably Malcolm but it has slipped and is unreadable

Also, the car is out there in the cold

VIN: VF7**************[VIN obfuscated, can be read by forum staff] (found the "CAR" file. Just need to round up all the receipts to bung in it).

Dealer hasn't responded yet and I am rather sceptical about the MAF being responsible but what do I know.

citronut · Post by **citronut** » 31 Dec 2010, 08:45

hun service citroen dose not like your last 8 digits, it comes up with "Unknown vehicle "

, and you have all your fingers ????

you get two more goes for free

regards malcolm

DickieG · Post by **DickieG** » 31 Dec 2010, 09:05

The quoted chassis number is two digits short i.e. Fifteen when there are seventeen in a chassis number.

Post by **myglaren** » 31 Dec 2010, 10:26

VIN: VF7**************[VIN obfuscated, can be read by forum staff]766323458

Sorry guys, misread the MOT certificate

No, don't have a full set of fingers Malc but also very short attention span.

DickieG · Post by **DickieG** » 31 Dec 2010, 10:51

myglaren wrote:VIN: VF7**************[VIN obfuscated, can be read by forum staff]766323458

Sorry guys, misread the MOT certificate

That number isn't recognised either

Post by **myglaren** » 31 Dec 2010, 12:27

Damnit! Will have to look in the car then. Going out soon so will check then.

Post by **myglaren** » 31 Dec 2010, 16:08

VF7**************[VIN obfuscated, can be read by forum staff]?
Number the same; I appear to have dropped a "Z" somewhere along the way.

citronut · Post by **citronut** » 31 Dec 2010, 16:14

is this your car Steve

C5 5 DOOR ESTATE 2.0 HDI 110 Manual gearbox 5

if so you enterd to many six's six's six's six's six's six's

regards malcolm