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View Full Version : Hello all am new here, just bought a Smart Roadster Brabus. P0135 o2 sensor heater?



tecmoto998
08-02-2011, 11:05 PM
Hi am new to this site. Just bought my Smart Roadster Barbus after a long search and love it to bits! Only had the car a few weeks and the ECU light has come up on the dash. Had the car checked for codes at my local garage and this lot came up:

P0135 02 sensor, heater circuit bank 1 sensor 1
P0141 02 sensor, heater circuit bank 1 sensor 2
P0412 secondary air injection system switching valve A circuit

The guy at the garage is looking into it but am worried its something major - can anybody shed some light on the above codes please and what to do to rectify the problems.

Many thanks!

p.s had them reset but came back on after a few miles.

Baggylicious
08-02-2011, 11:27 PM
Hiya Welcome to the forum and smart ownership
sorry i cant help with the codes but i hope you sort it soon & you can enjoy your new car

xx

tecmoto998
08-02-2011, 11:31 PM
Hi, thanks for the warm welcome. :)

UnhappyBrabbyGuy
08-02-2011, 11:49 PM
Hi am new to this site. Just bought my Smart Roadster Barbus after a long search and love it to bits! Only had the car a few weeks and the ECU light has come up on the dash. Had the car checked for codes at my local garage and this lot came up:

P0135 02 sensor, heater circuit bank 1 sensor 1
P0141 02 sensor, heater circuit bank 1 sensor 2
P0412 secondary air injection system switching valve A circuit

The guy at the garage is looking into it but am worried its something major - can anybody shed some light on the above codes please and what to do to rectify the problems.

Many thanks!

p.s had them reset but came back on after a few miles.

Just for reference have a look at:
http://www.evilution.co.uk/421

"P stands for Powertrain, this tells us it is an engine fault.
0 informs us that it is a generic code and not a manufacturer specific one.
1 tells us the system that is faulty, in this case 'Emission Management (Fuel or Air)'
The last 2 digits relate to a particular part and problem.

In most cases, it will be the upstream sensor that will suffer."

Could be a relay loose in the ECU considering sensor 1 and 2 show a fault?

I hope you get it sorted soon

tecmoto998
08-02-2011, 11:55 PM
Thanks for the detailed information - that is a great help.

I will post an update once i get it all fixed, just incase someone else gets the same problem.

Thanks again! :)

MrPoo
09-02-2011, 12:01 AM
p.s had them reset but came back on after a few miles.

Yeah, the system does that. I personally don't think it's a good idea to take it to a non-smart specialist once codes and lights become involved.

tecmoto998
22-02-2011, 03:23 PM
Update - after having my Smart Roadster Brabus off the road for over a week. Took it to the local garage and they said it was the Sam Unit (megga-money) so i had the unit sent away and it was gonna take 4 weeks to get fixed. So i had the item sent back to me and paid their time 140 to look at the car. I was going to take it to a Merc Smart dealer but stumbled across a Smart Specialist minutes from where I work they are called:

UNION STREET GARAGE based in STOWMARKET, SUFFOLK Tel: 01449 675617 (SMART MERCEDES SPECIALIST)

They said straight away that it wouldn't be the Sam Unit as I have none of the common symptoms which are problematic when the unit gets water into it. So anyway they did spend a good few hr checking the car over only to find a broken wire in main wiring harness to engine. This had basically rubbed against the rear suspension and snapped the wire in half. This little wire brought up all the error codes and the turbo also wasn't at full boost. They fix it and the codes were reset - so 200 lighterbut all ok. The great thing about these guys is that they showed me what they fixed and where the problem was on the car - also went through the computer system which gives the user a picture of the possible problems etc. They are very helpful and its great to be able to speak to someone who knows about these things and not someone sitting behind a desk answering the phone.

MrPoo
22-02-2011, 07:28 PM
Did you actually see them spend hours looking for the earth lead?

tecmoto998
22-02-2011, 10:12 PM
Hello, good question.

Well i didn't see them spend hrs on the car personally ( have to take their word for that ) but was with them for an hour watching them while on my lunch break. The said they spent time on the car tracking down the fault before i had got there - roads test etc. Then they continued to work on the car while i had a coffee and checked out what they were up to, i also asked another chap about Smart Roadsters and there common problems, very helpful as i am new to Smarts (only had my car 3 weeks) I then left the workshop, returned to work and then got a call approx. an hr later to say it all done.

137699
23-02-2011, 10:35 AM
If you're in stowmarket, you're VERY close to fudgesmart in Newmarket.

I couldn't see fudge charging 200 to replace an earth strap.....

tecmoto998
23-02-2011, 11:12 AM
Hi,

Thanks for that - i will check out their website.