2004 S80 goes into limp mode with the following codes,

RichD · Post by **RichD** » 01 Sep 2016, 10:20

My 2004 S80 has been going into limp mode on an intermittent basis. It will run fine for months then start to mess up. It is now throwing the following codes, P2111, P2135, P0221, P0638, P0121 and P0507. Would a dirty throttle body possibly be the problem?

Thanks Rich D.

DonVanhugenstein · Post by **DonVanhugenstein** » 01 Sep 2016, 13:22

P0221 - Throttle Position Sensor, Switch B Circuit range/performance problem

P0638 - Throttle actuator control

P0121 - Throttle Position Sensor, Switch A Circuit range/performance problem

P0507 - Idle control system RPM higher than expected

P2111 - Any code that does NOT start P0xxx is manufacture specific, some online searching may help find out what this code means but if you call volvo they will probably tell you

P2135 - Same as above, try calling volvo or a volvo specialist shop

If your Throttle Body is easy to access (unlike on my 99' T6) then a cleaning never hurt.
Use a brass brush, a fairly small one and some carb cleaner. The brush should do the work the carb cleaner is mostly to help and also wash away what you have cleaned so you can see and get it all out good.
Let the Throttle body dry after for 15min since it is electricaly controlled.

But the codes still point you towards the throttle position sensor I think, or throttle actuator.
P0507 is probably just because of the throttle position sensor or the throttle actuator or both.

Having the 2 Volvo specific codes will help everyone though.

RichD · Post by **RichD** » 01 Sep 2016, 14:25

The codes are P2111, Throttle Actuator control system-stuck open, and P2135, Throttle Position sensor-faulty signal. From what I've been reading it sounds like the ETB is failing. Would this cause the car to go into limp mode?

If I replace the ETB, considering it is a 2004 model, would it need programming?

Thanks for your advise.

Rich D

DonVanhugenstein · Post by **DonVanhugenstein** » 01 Sep 2016, 16:52

Volvo does a lot of different stuff than what I'm used to and I wouldn't put it past them to require a new ETB to need programming.
I think they only require programming on things like the Alarm for obvious reasons, and major electronic systems like a ECU or CEM and stuff like that were they have to pair the VIN of your car or something like that to the new ECU, CEM whatever.
I doubt the ETB even has the capability to be "programmed" or anything like that but maybe.

You could call and they should tell you, But I would call every single dealer and volvo specialist I could and ask if a new ETB needs programming just in case some or most try to pull a fast one on you for something that isn't required. Unless online can answer if it needs to be programmed or not.

But don't just jump to getting a new ETB before attempting to remove and clean it out, The ETB gets a lot of filth buildup in there. And at idle when the plate is near closed its like a wall for that filth and it just gets all over the place in that thing.
You should use a new ETB gasket after you take it off to clean too. The new gasket(s) can be used over again if the ETB cleaning doesn't work and you do decide to replace it, the new gasket(s) if handled with care will be just fine to put back on.

As for your Throttle Position Sensor try this out;
Turn ignition to position ll and wait,
A calibration process should be audible within about 30 seconds or so,
Wait until the calibration finishes,
Turn back to position O and wait 5 seconds and start the vehicle. This should calibrate the Throttle and might fix your TPS codes.

I'm not sure if that method will work on all Volvo cars and on what years it works, But I saw and took note of that procedure since it seems like something that could be useful one day.