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+--- Thread: Toyota Yaris pedal position sensor fault (/showthread.php?tid=28786)
Toyota Yaris pedal position sensor fault - lewisdmz - 17-01-2015
Hi all,
Looking for a bit of advice although I think I know what the answer will be. Our Toyota Yaris 1.4 D4D will go into limp mode about once every 3 or 4 months and throw a p1121 fault code which is pedal position sensor fault. If you turn the engine off and restart the EML will go off and the car will drive as normal.
Toyota kindly charge £366 for the pedal + sensor (do not sell them separately) which I was reluctant to pay before trying to ascertain 100% where the fault lies. Back in November I had a professional diagnostics guy have a look at it, check wiring continuity and do a sweep of the sensor which of course didn't find anything wrong. He did give the contacts a clean at both the sensor and ECU end so I was crossing my fingers that might be the end of it. However, today it did it again whilst driving on the motorway (not ideal).
Buying a new pedal sensor sounds like an expensive punt but I don't really know what else to do, my gf does lots of motorway miles and so it needs to be fixed. Annoyingly there never seems to be any for sale at the breakers/eBay.
Any advice? Thanks in advance
RE: Toyota Yaris pedal position sensor fault - Toms306 - 17-01-2015
I'm surprised there aren't used, usually TPSs are common across several models, have you got a part number to check them?
Are you on any Toyota forums? Could you swap with someone else and see if the problem moves?
RE: Toyota Yaris pedal position sensor fault - Seb_Ryan - 17-01-2015
Im positive these has a recall for this fault?
RE: Toyota Yaris pedal position sensor fault - Toms306 - 18-01-2015
They did recall for accelerator issues but its not this problem iirc. It was to do with the pedal sticking and holding the throttle open when you didn't want it.
RE: Toyota Yaris pedal position sensor fault - lewisdmz - 18-01-2015
(17-01-2015, 08:48 PM)Toms306 Wrote: I'm surprised there aren't used, usually TPSs are common across several models, have you got a part number to check them?
Are you on any Toyota forums? Could you swap with someone else and see if the problem moves?
The Toyota forums are terrible, not a patch in terms of info compared to the 306 ones lol. I agree they are probably shared across a few models with the 1.4D4D engine, tried Googling the part number to no avail.