A/C Problems and Engine Code Issues
#1
A/C Problems and Engine Code Issues
Hey everyone, I just bought my first MB C 320 an 01.
I bought it monday, but I looked at it on sunday and everything was working fine. cold a/c and no engine code(s).
Yesterday, I tried to recharge my a/c with a recharge kit from autozone (never done this before) and then it did not seem to work right away. I then drove the car for no longer than a minute and a puff of white smoke came from my engine bay and don't know from where since I was driving. Then, later on after letting the car rest, my a/c started blowing cold air. but now the problem is that it'll sometimes blow cold air and sometimes warm air. why is it doing that? what can I check? I took it to a mechanic who used to work on my Honda S2000 but he said he wont touch a benz lol. I'd rather work on it myself anyways so that I save a few hundred bucks. where can I start looking? Also, it makes a clicking noise behind my dash somewhere, what can that be?
Also, I got the engine code read to me at autozone and it read P0422 and P0432? I do not understand one bit of this ha. I'm a noob still. I did try to clean out MAF but the engine code did not turn off? How do I get the code to come off? Autozone wont take it off for legal purposes, which is understadable. Is the car supposed to automatically reset?
Thank you guys for your help
I bought it monday, but I looked at it on sunday and everything was working fine. cold a/c and no engine code(s).
Yesterday, I tried to recharge my a/c with a recharge kit from autozone (never done this before) and then it did not seem to work right away. I then drove the car for no longer than a minute and a puff of white smoke came from my engine bay and don't know from where since I was driving. Then, later on after letting the car rest, my a/c started blowing cold air. but now the problem is that it'll sometimes blow cold air and sometimes warm air. why is it doing that? what can I check? I took it to a mechanic who used to work on my Honda S2000 but he said he wont touch a benz lol. I'd rather work on it myself anyways so that I save a few hundred bucks. where can I start looking? Also, it makes a clicking noise behind my dash somewhere, what can that be?
Also, I got the engine code read to me at autozone and it read P0422 and P0432? I do not understand one bit of this ha. I'm a noob still. I did try to clean out MAF but the engine code did not turn off? How do I get the code to come off? Autozone wont take it off for legal purposes, which is understadable. Is the car supposed to automatically reset?
Thank you guys for your help
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#2
Member
Join Date: Apr 2013
Location: Kalifornication, USA
Posts: 95
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2007 C230 SS 6MT
Welcome, I'm new as well. You have a lot of reading/learning to do.
See "Common Problems" here to start https://mbworld.org/wiki/index.php/W203
You also want to make sure all of the recall campaigns for the car has been performed http://www.startekinfo.com/StarTek/doclist.jsp (click on Recall Campaigns)
Buy the service manual from dealer, part# P-2700-203-07
http://www.startekinfo.com/StarTek/o...tedDocId=50857 (note: do NOT contact 1-800-For-Mercedes, they are useless in trying to get a service manual).
If you don't have the car's service history, bring it to your local MB dealer & they can run your VIN & print out the service history for you. It will include the whole history of the car as well (which dealer sold it, options it came with, etc.). If they offer a free courtesy inspection, take them up on it & see what's wrong with your car.
This site http://www.obd-codes.com will give you a generic idea of codes you have. However, the car will need to get connected to a MB diagnostic system to get more in-depth info on the code.
See "Common Problems" here to start https://mbworld.org/wiki/index.php/W203
You also want to make sure all of the recall campaigns for the car has been performed http://www.startekinfo.com/StarTek/doclist.jsp (click on Recall Campaigns)
Buy the service manual from dealer, part# P-2700-203-07
http://www.startekinfo.com/StarTek/o...tedDocId=50857 (note: do NOT contact 1-800-For-Mercedes, they are useless in trying to get a service manual).
If you don't have the car's service history, bring it to your local MB dealer & they can run your VIN & print out the service history for you. It will include the whole history of the car as well (which dealer sold it, options it came with, etc.). If they offer a free courtesy inspection, take them up on it & see what's wrong with your car.
This site http://www.obd-codes.com will give you a generic idea of codes you have. However, the car will need to get connected to a MB diagnostic system to get more in-depth info on the code.
Last edited by SlashW203; 05-15-2013 at 07:43 PM.
#3
SPONSOR
Answer
P0422 Main Catalyst Efficiency Below Threshold (Bank 1)
P0432 Main Catalyst Efficiency Below Threshold (Bank 2)
A few parts you may need.
Oxygen sensor, LEFT upstream
MB# 0015400717
http://www.pelicanparts.com/cgi-bin/...400717&x=7&y=7
Oxygen sensor, RIGHT upstream
MB# 0015405017
http://www.pelicanparts.com/cgi-bin/...1.x=12&I1.y=10
Oxygen sensor, LEFT downstream
MB# 0015404617
http://www.pelicanparts.com/cgi-bin/...1.x=10&I1.y=10
Oxygen sensor, RIGHT downstream
MB# 0015404617
http://www.pelicanparts.com/cgi-bin/...1.x=10&I1.y=10
Exhaust pipe, LEFT
MB# 2034903219
http://www.pelicanparts.com/cgi-bin/...ion=2034900220
Exhaust pipe, Right
MB# 2034903119
http://www.pelicanparts.com/cgi-bin/...&I1.x=5&I1.y=5
whunter@pelicanparts.com
.
P0432 Main Catalyst Efficiency Below Threshold (Bank 2)
A few parts you may need.
Oxygen sensor, LEFT upstream
MB# 0015400717
http://www.pelicanparts.com/cgi-bin/...400717&x=7&y=7
Oxygen sensor, RIGHT upstream
MB# 0015405017
http://www.pelicanparts.com/cgi-bin/...1.x=12&I1.y=10
Oxygen sensor, LEFT downstream
MB# 0015404617
http://www.pelicanparts.com/cgi-bin/...1.x=10&I1.y=10
Oxygen sensor, RIGHT downstream
MB# 0015404617
http://www.pelicanparts.com/cgi-bin/...1.x=10&I1.y=10
Exhaust pipe, LEFT
MB# 2034903219
http://www.pelicanparts.com/cgi-bin/...ion=2034900220
Exhaust pipe, Right
MB# 2034903119
http://www.pelicanparts.com/cgi-bin/...&I1.x=5&I1.y=5
whunter@pelicanparts.com
.