How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask jon-t Your Own Question
jon-t, UK Car Mechanic
Category: UK Car
Satisfied Customers: 895
Experience:  NVQ L2 & L3Mechancal & Electronic Systems,BMW Technician, AMIMI, Eng Tech
Type Your UK Car Question Here...
jon-t is online now
A new question is answered every 9 seconds

Peugeot: rev..p0121 throttle postion sensor..sensor replaced..pedal

Customer Question

peugeot 307 1.4 16v on a 04 car will not rev engine light on and coming up with a code of p0121 throttle postion sensor replaced the sensor witch is part of the pedal still the same please help
Submitted: 8 years ago.
Category: UK Car
Expert:  jon-t replied 8 years ago.
This code is relevant to the throttle body on the engine and it requires a new throttle body.The throttle body has a sensor built in to it which monitors the flap position and adjusts it accordingly to the pedal position.
Customer: replied 8 years ago.
hi is there any tests i can do on the throttle body to make sure its that
Expert:  jon-t replied 8 years ago.
Only if you have the correct diagnostic tools and software to tell you the measured points, a visual check will not help.
Customer: replied 8 years ago.
i have the snap on ethos diagnostic tool just not sure on the readings i should be getting anymore info will be a great help otherwise might have to try a second hand one
Expert:  jon-t replied 8 years ago.

With the main dealer diagnostic kit you can compare position readings of the throttle body/pedal.

I have no experience of the snap-on system

Best to try a new unit


jon-t and other UK Car Specialists are ready to help you
Customer: replied 8 years ago.
ok mate thanks for the info will crack on with it in the morning Smile
Expert:  jon-t replied 8 years ago.

Please click the accept button



Related UK Car Questions