Peugeot 307 2.0 16v: Fixed Permanent Error P0108, Idle Engine Jerking, MAP Sensor Swap

Question

Hello everyone. Patient 307 2.0 16v permanent error p0108. It cannot be removed even when the engine is not running. The engine gently jerks at idle. MAP exchanged for second and no effect. I am asking for some hints. Thank you.

piotrekwoj1 · Answer

What do the actual parameters show, what MAP values?

dejwix · Answer

MAP on free 260. Could the throttle be damaged? at full opening shows 80% on free about 12%.

grala1 · Answer

The interface never says that an item is damaged!
Before replacing, check the power supply and signal value from the sensor.
Also check the sensor installation.
At the moment you have to check the installations. If it is ok then the damaged ECU or the value that shows the sensor is correct and you have, for example, a hole in the collector and pulling left air.
A description of the error could be useful.

dejwix · Answer

P0108 Manifold absolute pressure / atmospheric pressure sensor - high input power supply checked 5 v

grala1 · Answer

See what you see on the signal cable because the ECU shouts that the manifold has bad pressure (too high) or has a short circuit on the signal cable.
See what's on the engine fired with and without sensor.
Measure to mass.
It should be 5V when the engine is not running. The lower the voltage, the lower the manifold pressure (higher vacuum).
At the moment, it sees as if you were measuring the atmospheric pressure outside.

dejwix · Answer

the planet accurately shows the constant error signal of the intake pressure sensor short to positive or open circuit.

mario 77 · Answer

Write from which year the car and which driver.

Anonymous · Answer

Don't take the error description literally.
"Short to plus" only means that the voltage at the ECU input is out of range (too high).
This should be checked, measuring the actual pressure in the manifold and comparing with the sensor indication etc.
The problem can be both in electronics (sensor, ECU) and cabling as well as in mechanics (it is possible that you actually have too high pressure).

grala1 wrote:
See what you see on the signal cable because the ECU screams that the manifold is bad pressure (too high)

dejwix wrote:
MAP on free 260.

Something is wrong here. 260 is not enough. Hence the need for measurements.
It is possible, however, that the ECU is damaged.

dejwix · Answer

Peugeot 307 2.0 16v 2005 before lift FRG MM6LP. Added after 2 [minutes]: the diagram shows that the MAP sensor has a common supply with the camshaft sensor.

Anonymous · Answer

Well, so what?

dejwix · Answer

The error cannot be cleared even when the engine is not running. Added after 48 : I only write what I noticed.

mario 77 · Answer

First what is write what MAP sees after ignition, because from what I understand you have only measured the power supply. If after ignition it shows any stupidity then check the beam. If you have a scheme, you probably have the markings 1 (MAP) -Ac1 (ECU), 2 (MAP) -Ac2 (ECU), 3 (MAP) -Ac3 (ECU).

dejwix · Answer

MAP after ignition shows the correct atmospheric pressure 1080

mario 77 · Answer

And at this point the error should be able to be removed. It is possible that it is ECU. Have you compared the value of the vacuum on a connected vacuum gauge with what the controller sees as your colleague advised above?

bkroy · Answer

Hello,
I search the forum and in the car:
307 SW, 2004 (pre-fl), 2.0 16V 136 HP diagbox showed this error (check engine icon does not light on the board). Can anyone help - you can ride like this or rather mention something? In my opinion the car is working properly.

Keffer8919 · Answer

Have you got over this problem? I have the same, but my maps can see from 300 to 500

Peugeot 307 2.0 16v: Fixed Permanent Error P0108, Idle Engine Jerking, MAP Sensor Swap

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