[Solved] Peugeot 508 1.6thp Misfire: Investigating Errors P1336, P1338, P1340 and Potential Causes

Hello to all forum members and I am asking for advice.
1.6 thp engine 80000km mileage in 2014. while driving, the second and fourth cylinders go out, and errors appear at this point
P1336 - Misfire
P1338 - Misfire cylinder 2
P1340 - Misfire cylinder 4
and errors (these errors seem to me to be a consequence of the first three, i.e. misfiring)
P0098 - manifold inlet air temperature sensor
P0033 - Turbocharger bypass valve control circuit
P16B1 - Controlled air intake module
P0030 - lambda probe
After switching off the engine and restarting, the engine works properly, but the errors obviously remain. Spark plugs replaced, ignition coils are operational at 100%.
My suspicions
-variator
- chain
-tensioner
Maybe some of you had such problems and will confirm my assumptions or maybe I'm wrong and you need to look for the cause elsewhere ??

Good. Direct injection is in this unit. He's killing himself with muck at the inlet near the intake valves. You also need to check the compression pressure on a warm engine. Automotive downsizing comes slowly sideways.

"He's killing himself with muck in the inlet near the intake valves. You also need to check the compression pressure on a warm engine."
on many forums I see that the diagnosis with these symptoms is either the timing or the dirty upss inlet channels. Judi, but turning off and on the engine will change the pollution of these channels ??? Taking into account the fact that the car starts normally after restarting, faults such as contamination, cracking in the manifold, loose valve seat can be excluded. Due to the fact that I replaced the candles and I postponed the ignition modules, I also exclude these faults. I only have the timing, and more precisely the tensioner, where I would be more tempted towards the variator or something with the fuel supply system. I apologize for such philosophies but I don't know how these devices work, I was still learning mechanics on carburetor cars.

Due to the fact that great powers and moments are extracted from small units. It is necessary to take into account very small tolerances in the deviations of the engine operating parameters. As you write. Works fine after firing. Records irregularities and boom, end of drive. The cycle of ignition and the fun starts all over again. Because the controller needs time to measure the values of some operating parameters.

Judi, only storingi, I have an impression in the higher part of the revolutions, and after driving at least 20 km. I guess the computer should respond much faster ??? Well, unless I'm wrong.

Added after 2 [minutes]:

Anyway, I will check the pressure, and regarding the unit itself, it is also not so small you also have 1.2 pur tech 130km, what do you think about them ???

Added after 3 [hours] 8 [minutes]:

So far, I was not able to check the pressure, but I will do it as soon as I get a cure, but I let the camera into the cylinder (shock !!! visible traces of knocking that I have never seen even in a good toddler). Anyway, what I found was oil in both snowmen and I measured the lamda probe and it came out 8.9 and I heard that the correct result is within 4 should be or am I wrong?

Judi, so I measured the pressure and everything is ok on each cylinder 10.5 on the cold and 9.5 on the warm, I am thinking about the lambda probe

Hello again, everyone. Well, I did a diagbox reading and here's what came out:
Calculator status: MED17_4_2
Designation 1: 922159
Designation 2:
Current errors: 6
P1336: Misfire (catalyst influence)
Characteristics: Cylinder undefined
Status: permanent error
Location: local
Variables associated with the vulnerability
enrichment control state: closed loop
Calculated charge value (filling): 030.20%
Fast enrichment correction (row 1): 17%
Slow enrichment correction (row 1): 28%
pressure in the intake manifold: 630 mbar
Engine speed: 1488 rpm
vehicle speed: 23 km / h
accelerator pedal sensor 1 voltage: 1250 mV
accelerator pedal sensor 2 voltage: 610 mV
engine condition: engine running
battery voltage: 14.5V
engine work: pedal
measured filling: 45%
set inlet pressure: 630 mbar
GEAR SHOWN: Second gear engaged
Mileage: 80,606 km
set point of the inlet phase shifter position: -10 | of the shaft
crankshaft
Enrichment setpoint: 1,000 mixture composition
input mixture correction factor: 9%
inlet camshaft phase shifter position: -10 | of shaft
crankshaft
Crankshaft Target Adaption on Deceleration: Done
inlet pressure measured: 1630 mBar
nominal filling: 137%
Intake air temperature: 22 ° C
pressure setpoint in the petrol manifold: 117 bar
gasoline manifold pressure: 7 bar
fuel level: 19 liter
P1340: Misfire (catalyst influence)
Characteristic: cylinder No.4 injector
Status: permanent error
Location: local
Variables associated with the vulnerability
3 of 37 1/19/2019 19:13
enrichment control state: closed loop
Calculated charge value (filling): 030.20%
Fast enrichment correction (row 1): 17%
Slow enrichment correction (row 1): 28%
pressure in the intake manifold: 630 mbar
Engine speed: 1488 rpm
vehicle speed: 23 km / h
accelerator pedal sensor 1 voltage: 1250 mV
accelerator pedal sensor 2 voltage: 610 mV
engine condition: engine running
battery voltage: 14.5V
engine work: pedal
measured filling: 45%
set inlet pressure: 630 mbar
GEAR SHOWN: Second gear engaged
Mileage: 80603 km
set value of the inlet phase shifter position: -3 | shaft
crankshaft
Enrichment setpoint: 1,000 mixture composition
input mixture correction factor: -8%
position of the intake camshaft phase shifter: -6 | of the shaft
crankshaft
Crankshaft Target Adaptation on Deceleration: Done
inlet pressure measured: 630 mBar
nominal filling: 45%
Intake air temperature: 14 ° C
pressure setpoint in the gasoline manifold: 63 bar
gasoline manifold pressure: 13 bar
fuel level: 34 liter
P0087: Fuel system
Characteristics: Pressure measured in the injection manifold lower than the set value
Status: permanent error
Location: local
Variables associated with the vulnerability
enrichment control state: closed loop
Calculated value of charge (filling): 010.59%
Fast enrichment correction (row 1): -1%
Slow enrichment correction (row 1): 28%
pressure in the intake manifold: 270 mbar
Engine speed: 1907 rpm
vehicle speed: 42 km / h
accelerator pedal sensor 1 voltage: 710 mV
accelerator pedal sensor 2 voltage: 340 mV
engine condition: engine running
battery voltage: 14.5V
engine work: pedal
measured filling: 15%
set inlet pressure: 280 mbar
GEAR SHOWN: Third gear engaged
P1337: Misfire (catalyst influence)
Characteristic: Cylinder No.1 injector
Status: permanent error
4 of 37 1/19/2019 19:13
Location: local
Variables associated with the vulnerability
enrichment control state: closed loop
Calculated value of charge (filling): 065.49%
Fast enrichment correction (row 1): 28%
Slow enrichment correction (row 1): 28%
intake manifold pressure: 1080 mbar
Engine speed: 1888 rpm
vehicle speed: 15 km / h
accelerator pedal sensor 1 voltage: 1720 mV
accelerator pedal sensor 2 voltage: 840 mV
engine condition: engine running
battery voltage: 14.5V
engine work: pedal
measured filling: 92%
set inlet pressure: 1100 mbar
GEAR SHOWN: First gear engaged
Mileage: 80,606 km
set point of the inlet phase shifter position: -10 | of the shaft
crankshaft
Enrichment setpoint: 1,000 mixture composition
input mixture correction factor: 9%
inlet camshaft phase shifter position: -10 | of shaft
crankshaft
Crankshaft Target Adaptation on Deceleration: Done
inlet pressure measured: 1630 mBar
nominal filling: 137%
Intake air temperature: 22 ° C
pressure setpoint in the petrol manifold: 117 bar
gasoline manifold pressure: 7 bar
fuel level: 19 liter
P1339: Misfire (catalyst influence)
Characteristic: cylinder no.3 injector
Status: permanent error
Location: local
Variables associated with the vulnerability
enrichment control state: closed loop
Calculated value of charge (filling): 065.49%
Fast enrichment correction (row 1): 28%
Slow enrichment correction (row 1): 28%
intake manifold pressure: 1080 mbar
Engine speed: 1888 rpm
vehicle speed: 15 km / h
accelerator pedal sensor 1 voltage: 1720 mV
accelerator pedal sensor 2 voltage: 840 mV
engine condition: engine running
battery voltage: 14.5V
engine work: pedal
measured filling: 92%
set inlet pressure: 1100 mbar
GEAR SHOWN: First gear engaged
Mileage: 80,605 km
set value of the inlet phase shifter position: -7 | shaft
5 of 37 1/19/2019 19:13
crankshaft
Enrichment setpoint: 1,000 mixture composition
input mixture correction factor: -1%
inlet camshaft phase shifter position: -8 | shaft
crankshaft
Crankshaft Target Adaptation on Deceleration: Done
inlet pressure measured: 1080 mBar
nominal filling: 94%
Intake air temperature: 14 ° C
pressure setpoint in the gasoline manifold: 118 bar
gasoline manifold pressure: 15 bar
fuel level: 25 liter
P1338: Misfire (catalyst influence)
Characteristic: cylinder no.2 injector
Status: permanent error
Location: local
Variables associated with the vulnerability
enrichment control state: closed loop
Calculated charge value (filling): 100.00%
Enrichment correction fast (row 1): 38%
Slow enrichment correction (row 1): 28%
intake manifold pressure: 1630 mbar
Engine speed: 2480 rpm
vehicle speed: 37 km / h
accelerator pedal sensor 1 voltage: 2670 mV
accelerator pedal sensor 2 voltage: 1320 mV
engine condition: engine running
battery voltage: 14.6V
engine work: pedal
measured filling: 141%
set inlet pressure: 1580 mbar
GEAR SHOWN: Second gear engaged
Mileage: 80,606 km
set point of the inlet phase shifter position: -10 | of the shaft
crankshaft
Enrichment setpoint: 1,000 mixture composition
input mixture correction factor: 9%
inlet camshaft phase shifter position: -10 | of shaft
crankshaft
Crankshaft Target Adaptation on Deceleration: Done
inlet pressure measured: 1630 mBar
nominal filling: 137%
Intake air temperature: 22 ° C
pressure setpoint in the petrol manifold: 117 bar
gasoline manifold pressure: 7 bar
fuel level: 19 liter
Any tips ???

After a long break, the parts came and the car was repaired. The high pressure pump was the cause of all the fuss.

After a long break, the parts came and the car was repaired. The high pressure pump was the cause of all the fuss.

Added after 46 [seconds]:

I consider the topic closed.