Whilst driving home this morning I noticed that "Malfunction indicator lamp" had lit up (the little engine shaped one between the ABS and the battery, on the bottom of the right hand side dial for fuel and engine temperature).
I stopped the car and checked everything visually, couldn't see anything obvious so drove home, as soon as I got through the door I took a look at the owners manual, it states as follows.
If the lamp comes on when driving, check the following, empty fuel tank (filled up yesterday), loose fuel tank cap (tight).
These cases are temporary malfunctions and the lamp will go off after taking several driving trips, if it doesn't contact your Toyota dealer ASAP.
If the fuel tank is not empty or the fuel tank cap is not loose...
There is a problem somewhere in the engine, emission control system, electronic throttle control system, automatic transmission electrical system or warning light system.
Contact your Toyota dealer ASAP to service the vehicle.
The owners manual then goes on to mention a problem with engine speed when depressing the accelerator pedal (everything OK there).
I telephoned MrT and told him what had happened, he said "Don't do too much driving over the weekend and bring it in on Monday morning."
I'm scared to do any driving at all until I know what the problem is.
Has anybody else had this problem? I did do a search but nothing came up.
It did it in my old Astra and it turned out the ECU was broken s:shock: :shock: s:shock:
Best £600 i ever spent that WASN'T :@
Don't get too worried tho as it happened again after that and it was just a loose connection - legendary VXL build quality s:roll: :roll: s:roll:
Unless and until you know what code(s) the ECU has thrown it's best to treat with caution and drive as little as possible. If the engine appears to be idling and running 'normally', then a) the ECU hasn't gone into limp mode; and b) it's likely all the critical sensors are still functioning.
When you do go in, 'insist' that they tell you what the actual codes were - they're be four digit numbers - don't let them fob you off with some generic, "faulty sensor" undescriptive text!
You don't say what year/transmission you have, nor whether you've modified your car in any way. Once we here what the code is, we can then give you some subjective commentary on what it means s:) :) s:)
Quote from: "mph"You don't say what year/transmission you have, nor whether you've modified your car in any way. Once we here what the code is, we can then give you some subjective commentary on what it means s:) :) s:)
Sorry MPH, it's an 02/manual transmission, no engine mods. s:oops: :oops: s:oops:
Mine has never lit, but the guys at SC seem to think it's ok to just reset it and keep driving. If it appears again, worry about it. If it doesn't, forget it.
(disconnect the battery for 5 mins or so to reset it)
I took the car into the dealers this morning, they said that the light had come on because of a problem with the O 2 (oxygen) sensor, the code shown was P0141, they are going to replace it on Wednesday, they also said that they'd noticed some corrosion on the front discs and they'll change these as well under warranty.
P0141 - O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
That'll be what's known as the 'third' sensor, ie the one after the main CAT. Wouldn't have hurt to drive it at all, but always better safe than sorry!
Quote from: "mph"P0141 - O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
That'll be what's known as the 'third' sensor, ie the one after the main CAT. Wouldn't have hurt to drive it at all, but always better safe than sorry!
Thanks Martin, at least I know now, worried for a while though. s:wink: :wink: s:wink:
Quote from: "MR2Blue"I took the car into the dealers this morning, they said that the light had come on because of a problem with the O 2 (oxygen) sensor, the code shown was P0141, they are going to replace it on Wednesday, they also said that they'd noticed some corrosion on the front discs and they'll change these as well under warranty.
How good is that? At least one decent dealer service department out there!
Quote from: "Andy S"How good is that? At least one decent dealer service department out there!
They haven't fixed it yet... s:wink: :wink: s:wink:
Funny that the codes are so specific.
I had the error light a while back and the dealer said one of the O2 sensors had gone 'open circuit' but they couldn't tell which one so would change all 3 under warranty !!
Quote from: "jblackmore"Funny that the codes are so specific.
I had the error light a while back and the dealer said one of the O2 sensors had gone 'open circuit' but they couldn't tell which one so would change all 3 under warranty !!
Odd. Not only does the ECU tell you which sensor is faulty (bank1, bank2, or the 3rd sensor that keeps an eye on catalyst operation), But finding out whii]ch one was "open circuit" would be as simple as unplugging it and checking it with a multimeter. Earning a bit of warranty cash on the side perhaps? Still, at least you got 3 new sensors out of it... (Or did you?)
Quote from: "GSB"They haven't fixed it yet... s:wink: :wink: s:wink:
I've just telephoned the dealer, part's in but can't fix it until Friday, the're rushed off their feet. s:cry: :cry: s:cry:
Quote from: "MR2Blue"Quote from: "GSB"They haven't fixed it yet... s:wink: :wink: s:wink:
I've just telephoned the dealer, part's in but can't fix it until Friday, the're rushed off their feet. s:cry: :cry: s:cry:
Then wait, drive it a bit. I had a CEL and immediately took my car to my local dealer. It had the same fault code as you. They reset it a few times and said I could still drive it round whilst they waited for the new part to come in.
A week later I went back and told them that the CEL hadn't shown in the past week. They checked everything and said that it must have been a glitch. Nothing was replaced and I haven't had a problem since (this was about 18 months ago)
and you got to drive the car how much in the last 18 months?
A fair few thousand
sorry just figured from your previous posts it had spent most of that time either at Jemca or in your garage as you told them it was unafe to drive.
Took the car in today, sensor replaced. s:D :D s:D
Regarding changing the front discs, they said they didn't need to be changed, their boss looked at them and said they only needed (can't remember the word he used) polishing/smoothing. s:cry: :cry: s:cry:
I told them, that now they've brought them to my attention, I'll be obsessed with them and every time I see a blemish I'll bring the car in. s:evil: :evil: s:evil:
Purchased the ScanTool gadget that GSB recommended from Gendan and have the code "P0141 - O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)".
Is there anything I can do or is it a job for Mr.T (car is out of warranty though)?
It's most likely just the O2 sensor that has given up the ghost - the one in question is the 3rd sensor just after the main cat.
Quote from: "jag"Purchased the ScanTool gadget that GSB recommended from Gendan and have the code "P0141 - O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)".
Is there anything I can do or is it a job for Mr.T (car is out of warranty though)?
Not changed O2 sensors on the '2, but should be a pretty simple job to unwire and screw out, once you identify which sensor is bank 1 sensor 2. I imagine a forum search would probably tell you where this sensor is.
Quote from: "Andy S"Quote from: "jag"Purchased the ScanTool gadget that GSB recommended from Gendan and have the code "P0141 - O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)".
Is there anything I can do or is it a job for Mr.T (car is out of warranty though)?
Not changed O2 sensors on the '2, but should be a pretty simple job to unwire and screw out, once you identify which sensor is bank 1 sensor 2. I imagine a forum search would probably tell you where this sensor is.
and as I said yesterday :-
Quote from: "SteveJ"It's most likely just the O2 sensor that has given up the ghost - the one in question is the 3rd sensor just after the main cat.
s:? :? s:? s:? :? s:? s:? :? s:?
Hi,
Do a search for "O2 sensor"; I remember someone on here posting a link to a site that was selling O2 sensors suitable for the MR2 for about £30, IIRC! s8) 8) s8) Which is a bit better than the price toyota ask s:wink: :wink: s:wink:
I'd imagine it should be easy to do - remove the old O2 sensor, cut wires, then solder the wires of the new sensor onto the ends of the wires on the loom. I think the site gave instructions of which wires to connect together.
Simple as s:roll: :roll: s:roll: s:lol: :lol: s:lol:
Quote from: "SteveJ"Quote from: "Andy S"Quote from: "jag"Purchased the ScanTool gadget that GSB recommended from Gendan and have the code "P0141 - O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)".
Is there anything I can do or is it a job for Mr.T (car is out of warranty though)?
Not changed O2 sensors on the '2, but should be a pretty simple job to unwire and screw out, once you identify which sensor is bank 1 sensor 2. I imagine a forum search would probably tell you where this sensor is.
and as I said yesterday :-
Quote from: "SteveJ"It's most likely just the O2 sensor that has given up the ghost - the one in question is the 3rd sensor just after the main cat.
s:? :? s:? s:? :? s:? s:? :? s:?
Sorry Steve, don't know how I missed your post! Should be an easy job!
Cheers guys. I'll give it a go.
Hi,
I had the engine warning light appear a few days ago and following the advice from this site I reset the ECU and cleaned the MAF sensor using carb cleaner. After reinstalling everything and reconnecting the battery I started her up and the light was no longer showing - until about 5 miles later.
So I went to a local dealer and had the fault diagnosed as P0141 (bank 1, sensor 2). Was quoted £120 incl VAT for the part, £190 all in for it to be fitted (although the guy hinted he should be able to arrange a discount considering I'd paid £40 for the diagnosis).
I've read a bit more on this site about this specific error (http://www.mr2roc.org/phpBB2/viewtopic.php?t=2300&highlight=p0141) and a couple of people have had identical warnings appear but no one seems to have posted an update to what they did or how it went (unless I'm totally missing it somewhere)
I'm a bit of newbie when it comes to exhaust systems, cats, pre-cats, manifolds and all that stuff. I am more than happy to have a stab at anything if someone can advise how I might do that? I can probably rope in a more mechanically-minded friend to help me if it's a complicated job? Also, I saw on one post that an 02 sensor could be bought for £30 - can anyone help on where I could get one?
Cheers,
Yorkie
First port of call is to remove the offending sensor and clean it - the carb cleaner you used on the MAF is fine. If this doesn't help, then swop the sensor out, see here (http://www.gendan.co.uk/category_113.html) for a cheaper replacement.
This warning has come up several times on my car and seeing as my toyota garage is 100 yds from my house I ve always called into them with.
My Garage is very good although they had to admit they'd never seen the roadster mr2 till I took it in, but its the 3rd Toyota I've owned and both my Folks and my sister have toyotas also so they've always looked after me.
After reading about cleaning the MAF I talked to John in the Garage, we checked it but it wasn't really dirty so we just reset the ECU and decided to order a new MAF.
Just had it fitted and the ECU reset this morning and the difference unbelievable, Torque much more linear. Haven't paid them yet but they told me they'd send the bill out.
For what it seems yes cleaning your MAF should be something you do every 6 months but that of course won't help a faulty one!
Bite the bullet and get a new one
kj, we are talking O2 sensors, not MAF in this case.
Sorry s:oops: :oops: s:oops:
Thanks Slacey, are there any instructions for removing the sensors, I've done a quick search but can't find anything with some nice pictures! (unless it's covered on here http://www.spydermagazine.com/2003/Nov/ppe/ppe.htm)
Presumably I'll need a 02 removal tool right?
thanks for the link to the sensor site, is it the 4-wire one I want (£32.97)? I've read that I might need to chop, crimp and resolder wires - is this right?
Also, I've been reading a little more about the exhaust setup and now I'm worried about the pre-cat situation. Should I gut the pre-cats? I can't understand why Toyota would sell a car where the pre-cats will disintegrate after a few thousand miles and shaft the engine.
By the way, the car is totally stock and with the CEL still on the car seems fine. It idle's and accelerates as good as it always has done.
Yorkie
Quote from: "yorkie"Presumably I'll need a 02 removal tool right?
yep, its a 22mm Oxygen socket you'll need, just search on google for them, you'll pay under £8 for one delivered