206 gti po170 fault code

david77

New member
Tadpole
Joined
Dec 28, 2012
Messages
14
Location
Goolwa SA
Hi again,
I posted a "206 woes" thread just after xmas and the saga continues. I have a 206 gti rfr motor. When cold it has been taking about 3 stalls before starting for a while now. The car seems ok around town but on country trips i have trouble. The car has misfired a bit on two occasions lately but with no engine light showing. Mostly however the engine runs smoothly with a big reduction in power and it shows a engine management light. I got the ecu read and it came up with a po170 fault code - generic fuel injection code (no specific cylinder number). After that all was ok and i tried to tell myself it was a bad batch of fuel. I put some injector cleaner in and gave it a recommended "Italian tune up" - 6000rpm uphill in 3rd gear quite happily. Today i tried a country drive again and the engine management light came on again in 5th gear at about 90kmh - the car would not sustain 90kmh up a steep hill in any gear (it usually eats it!).
Once i was home again and the car had a rest it was ok to drive and no lights showing. I have had the battery load tested and the plugs and fuel filter have seen about 10,000 kms. When I got home I got some contact cleaner and cleaned the e.c.u. connectors and any others that i could see. The crank sensor connection was very oily and the cam sensor connection had one connection that looked a bit green - but i have a gut feeling that they were all ok. I also took fuel pressure readings on the fuel rail with my old fashioned steel slide type tyre gauge - engine off with ignition on gave 60kpa (8lbs/sq") and engine running 210kpa (31lbs.sq") my e-manual says 3.5bar (is that 350kpa?)

I am wondering if anyone else has experienced a PO 170 fault code and what was the resulting problem?
thanks for any help you might offer??
 
I don't know if this is of any interest or help to anyone but i thought I'd post it anyway. The trouble with my car ended up being a catalytic converter. I have done a fair bit of dirt driving and the converter had rattled itself into a nice "ball" shape which must of bounced over the outlet every now and then and caused a blockage - like a ball valve. The car has always had a rattly exhaust manifold baffle so i didn't really notice the extra noise that came on gradually. The car is going good again, but is still having troubles starting first thing - 5 or 6 stalls a bit of a warm up and then its fine. Maybe this is of some help??
 
Hi David,

Thanks for posting up the eventual fix.

YFO, I always thought the regular GTi 138 had a ceramic core in the cat, whereas the GTi180 had a more robust steel design.
 
I'm going to have to say from my point of view unlikely. Bad/incorrect fuel or fuel mixture (due to a part/sensor failure etc) coupled with rough roads, possibly. But rough roads only? Hmmm.
 
I know it doesn't sound helpful but they just do... That is the insides of cats fall to bits and cause rattles and other issues in cars which in all other ways appear to be operating normally. We've had several instances in a relatively short period of time, one on a 205 and twice on 406s, admittedly older cars than the 206. The first place we look now if the car starts to seem a bit asthmatic is the exhaust.

Cheers

Jim
 
Mostly 98 since the cars have been in the family. High mileage cars, all over 150,000kms. A friend who works on Pugs advises he is starting to see the first of the 307s now having cat problems. Also some earlier hdis.
 
A lot of the 307's with cat problems are due to bad fuel (most don't have inline fuel filters) causing injectors to dribble, and coils not firing a consistent spark, which results in in burnt fuel in exhaust which leads to melty melty cat cat
 
Gents, a query from the Shaky Isles, Auckland,NZ. MY 206 GTi 180 is showing a fault on the vdu dash screen-pollution fault & the small exhaust/muffler symbol is showing on the dash instrument panel, so I connected my OBD2 reader to the port and I get 2 codes stored (1) P1158-manufacturer control and (2) P021-Throttle pedal position sensor/switch A circuit range/performance.
Car performance has dropped. The exhaust symbol and fault warning has appeared before and then disappeared in 2 or 3 days. Do I have a faulty cat converter, or is the O2 sensor stuffed and should be replaced. New cats are damned expensive, so dont want to go there.
Any advice would be appreciated
 
Hi Mi16freak,

Sounds like the car has an issue with either the motorised throttle body (p1158) or the throttle position sensor (P0121). Both are part of the throttle body, although perhaps the TPS can be replaced separately (not sure).

You're not a left foot braker, by any chance?

"Anti-Pollution Fault" is a generic msg that is not necessarily related to the cat converter.
 
206 GTi 180 engine fault codes & their interpretation

Hi Simon, thanks for your reply, that is very helpful, I will talk to my mechanic and seek further advice & get a price from UK for the TP sensor but not purchase until i am confident of the fault & remedy. Relieved about the cat.
No I am not a left foot breaker, that is that wild Kiwi V8's driver Shane V Gis, he is also a drift specialist.

Love the 206 GTi 180 on track, no body roll, great steering with no real understeer & grip for Africa, the engine revs well too, so drive on the loud pedal. But I have too many cars so this one must go but I am 76.
 
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