(21-08-2021, 06:03 PM)ipeco85 Wrote: Hello,
my name is Peter, living in Austria/Vienna.
A few months ago I bought a really cheap Peugeot 306 Cabrio 1996 1.8l machine, Saint Tropez edition.
In the meantime I learned a lot about this car and luckily fixed many bugs and failures.

A fault I cannot classify is the meaning of the following error codes

# 34     Canister Purge Electro-valve
and
# 52     Self-Correction Richness Regulation

as I didn't find a - for me - meaningful translation for these expressions.

Hopefully someone can explain!

Many thanks in advance and best regards
Peter

(22-08-2021, 09:29 AM)Mighty306 Wrote: I think that would be the correct purge solenoid valve. They are easy to test though - just 2 pins. If the solonoid is healthy you should get 50 ohms of resistance across the pin. You can also check that it operates by putting 12v across the pins (in the correct polarity - pin 2 is live, pin 1 earth).

You'll also need to check the wiring to the solenoid. I think it will probably be earth switched by the ECU so the earth wire will lead back to the ECU.

As for the mixture regulation, that could be any number of things, although you'd experience some other symptoms with a few of them:

> Vacuum leak on the inlet side
> Exhaust leak (e.g. manifold gasket or cracked manifold)
> Dirty throttle body
> Poor spark (ignition coil)
> Dirty/clogged injectors
> Tired O2 (Lambda) sensor

> Faulty idle air control valve (or wiring to it). You'd likely also have high / low idle issues with this one though.
> Faulty MAP sensor (or wiring to it)
> Faulty TPS (or wiring to it)
> Faulty coolant temp sensor (or wiring to it)

Sorry, but the cars are of an age where they don't give very specific fault codes. I had the same thing & it turned out to be the MAP sensor. It'll get expensive if you go down the road of trying to replace sensors to find the fault. You need to find a way to test them, using vehicle-specific data or if someone has Peugeot Planet you can look at live data for some of the sensors.

(22-08-2021, 05:42 PM)ipeco85 Wrote: Thanks for your useful hints and comments! I'll try to work through them step by step.
Would you kindly give me a location hint for the correct purge solenoid valve? Don't know how it looks like :-(

The most worrying effect is bad idle after warm-up, especially detectable after downhill passages with closed throttle.
The motor control lamp usually lights up for a short time (minutes) during warm-up, then goes out, but the idle problem is going worse with temperature.
Air input and exhaust should be ok now.
The temperature sensor i was able to cure by cleaning, has its 6 to 12 ohms now but the 150 ohms before ..

This is a link to the 2-wire error reading procedure:
https://www.instructables.com/Reading-1996-Peugeot-306-Phase-1-Fault-Codes-2-pin/

and a extended error code list:
11 End of Test Sequence.
12 Beginning of Test Sequence.
13 Air Temperature Sensor.
14 Injection NTC Sensor.
15 Fuel Pump(s) Relay.
21 Throttle Switch (Idle Position).
22 Idle Regulation Electro-valve.
31 Self-Correction Richness Regulation.
32 Self-Correction Richness Regulation.
33 Air Flow Sensor.
34 Canister Purge Electro-valve.
35 Throttle Switch Unit (Full Load Position).
41 Engine RPM Sensor.
42 Injectors.
43 Detonation Sensor Regulation.
44 Detonation Sensor.
51 Self-Correction Richness Regulation.
52 Self-Correction Richness Regulation.
53 Battery Voltage.
54 Electronic Control Unit.

hope it helps somebody

Best reagrds and thanks
Peter

(22-08-2021, 05:42 PM)ipeco85 Wrote: Would you kindly give me a location hint for the correct purge solenoid valve? Don't know how it looks like :-(