EGR problem

[rekvy]

Hello guys,

I had preventively cleaned my egr valve with carbon cleaner. Everything seemed to be ok so I put everything together but I forgot tu connect the cable to EGR . So I started the car and immediately engine light appeared. So I realized that connector is not connected so I reconnected it. After that I erased the code P0401 and thought everything is working fine. But after roughly 50 miles engine light appears again, with the same code and this keep going forever. If I erase the code it appears again and again and again. Car is running just fine without any problem! Can some help me what to do? Jazz 1.4 61kw 2003. Thank you.

[Jocko]

Check connector and use electrical lubricant on the pins and socket.

[UKjim]

As Jocko said, can’t see it being anything else. I just cleaned mine and sprayed the connector with Servisol contact cleaner before replacing.

[rekvy]

So I have cleaned the connectors with isoprophyl alcohol and after some miles engine light appeared again but only for couple miles. After 10 miles it dissappeared right away without using diagnostic tool. Now is more than 50 miles and the engine light didn't come up. So it should work ! Thanks.

My other question: can I clean my MAP sensor with valvoline egr cleaner ? Hope it doesn't make small layer on the sensor. Thanks

[UKjim]

So I have cleaned the connectors with isoprophyl alcohol and after some miles engine light appeared again but only for couple miles. After 10 miles it dissappeared right away without using diagnostic tool. Now is more than 50 miles and the engine light didn't come up. So it should work ! Thanks.

My other question: can I clean my MAP sensor with valvoline egr cleaner ? Hope it doesn't make small layer on the sensor. Thanks

Glad to hear it seems to be OK now, can't answer your question I am afraid.

[sparky Paul]

With these sorts of things, I'm afraid I subscribe to the "if it's not broke, don't mend it" school of thought.

[rekvy]

fair enough! My mechanic recommended me to do it! I guess I will leave MAP sensor for now or I will break it again Thanks guys for your help! Appreciated

[Jocko]

So I have cleaned the connectors with isoprophyl alcohol

IPA is fine for cleaning, but you need a lubricant like Servisol to ensure the connection remains sound.

[Jazzmeister]

My other question: can I clean my MAP sensor with valvoline egr cleaner ? Hope it doesn't make small layer on the sensor. Thanks

Any kind of contact cleaner that states on the can that it leaves no residue behind works fine.

[sparky Paul]

My other question: can I clean my MAP sensor with valvoline egr cleaner ? Hope it doesn't make small layer on the sensor. Thanks

Any kind of contact cleaner that states on the can that it leaves no residue behind works fine.

I think the OP was wanting to squirt something into the sensor, I don't think I would be putting anything like that into small dead end holes. There's usually a diaphragm of some sort in there, and you don't know how a solvent cleaner may react with it.