Peugeot 307 (2001, 1.6 16V) - Error P0121, Antipollution Fault & High Idle Speed: TU5JP4 Engine

peugeot 3007
r 2001
1.6 16V
TU5JP4 INJECTION ENGINE


Yesterday I went to work to light the engine light with the message Antipollution Fault.
I have ELM321 connected to a computer and showed errors:


After clearing the errors, error P0121 returned together with the Antipollution Fault message.
I removed the throttle, cleaned it. After mounting the error after resetting still returned and I had increased idle speed (about 1100 rpm).
After driving a kilometer, the speed returned to normal.
Today, returning from work, I noticed the increased idle speed again and the Antipollution Fault message together with error P0121 all the time.
Does this mean a damaged throttle?

Hello, how will it be in emergency mode, unplug the four-pin cube from the gas pedal and see with the meter whether you will have a voltage of 5V between pins 4 and 2.

sulof1601 wrote:

Hello, how will it be in emergency mode, unplug the four-pin cube from the gas pedal and see with the meter whether you will have a voltage of 5V between pins 4 and 2.

I don't have any ankle on the accelerator pedal. There is only a rope attached to the pedal and nothing else - it looks like this:


I replaced the throttle but the error still returned.
In general, the case looks like this:
After clearing the error sometimes I go for a while and the error returns and sometimes immediately.
This always happens as soon as the car starts up and attempts to gas - then the car does not respond to the accelerator - the engine starts to choke and the message Antipollution Fault appears and the engine light comes on.
After switching off the ignition and starting the car again, the accelerator pedal now works normally and you can drive although the error still remains

Ok. But do you get to the throttle cable do you have a fully electric throttle?

I don't have a throttle cable. It looks like this:

In 1.4 engines there was a cable and in 1.6 a gas pedal sensor. If the engine controller you have Sagem S 2000 then the engine you have 1.4 and in the throttle you only have a 3-pin potentiometer one of the external pins should have 5V after ignition. If you catch the error do not put out the car, unplug the plug and check if such voltage is present.

Added after 1 [minutes]:

So the sensor is located in the engine compartment somewhere near the bulkhead wall, check where the other end of the cable goes.

Added after 1 [minutes]:

How to locate the sensor is the rest as in the first post.

I located the sensor:


With me, according to the designation between 2 and 3 pin is 5V and between the second and fourth about 10V.


The damper has 6 pins and the cube on the fifth pin has a voltage of 5V


All the above measurements were made in safe mode.


After deleting errors, disconnecting the cube from the sensor and firing the car, there is also an Antipollution Fault error and engine indicator but with a completely different error code from the program:

On the cube from the throttle everything is correct but on the sensor cube must be as described because either you have a short circuit in the installation or the driver has fallen.

I am asking you for help because I have the same problem.
Did you deal with this problem to the end?

I recently mentioned in 307 what was to be done:
- lamba probe 2
- exhaust manifold welding
- throttle cleaning + calibration
- crankshaft position sensor replacement
- replacement of the gas potentiometer in the engine (original used)
- new gas injectors
- new reducer
- new gas pipes
- I did the engine overhaul: replacement of rings, valves, etc.
- oil change, filters

and the car is still stupid ... (increases the revolutions to 1,500 and revolves)

Hello, Peu 206 sw, TU5JP4 NFU 1.6 16V 109HP engine. The same BOSCH throttle. The throttle traveled 28,000 km for 2 years - still at a German who cried and replaced it in the service for 480 Euro. There was a annoying error P0121 or P0122 out of nowhere. I've been doing wonders, but I have it !. The throttle potentiometer has 4 resistance paths. There are 4 brushes on these paths, set with their sharp edges perpendicular to the paths. After some run there MUST be scraping of the resistive layer .... proof in attached photos. The effect is like a crackling potentiometer in audio. There is an error of convergence of signals A and B, because one of them starts to interrupt. It was enough to move the brushes to a slightly different position - half a mm further or closer to the axis of rotation and the car runs like gold. It's also a good idea to gently clean the paths with isopropanol. You need to pay attention to the delicate wires welded on one of the edges. Of course, according to Bosch's will, this repair is also short-lived. Normally, decent potentiometers used in electronics have a sled-shaped slider, and the really good ones have a carbon brush. The error is very dangerous, because when it occurs, the car enters the antipollution fault mode and suddenly loses power, which can be fatal during overturning. By the way, I changed the throttle plug - the old one was wet, and the gas pedal plug had very loose contacts. I greet the lovers of sour apples.

Hello!
Did you fix this problem by replacing throttle?

whether I was able to find the cause because I have the same