Question about Cars & Trucks
If you are saying the check engine light is staying on, you need to have someone scan the computer for trouble codes, fix the problem, then clear the codes with the scanner. The light will go off then.
Most auto parts stores will scan for free in hopes of selling you some parts you may or may not need.
Posted on Jan 10, 2013
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Posted on Jan 02, 2017
the no data error can be contributed to a bad interface cable or the scaqn tool was configured wrong and therfore could not connect to the ecm. I would recommend having a scan done again by a certiefied volkswagon tech chances are the mechanics used the wrong adapter cable or reader card. your smog problem could be that your evap canister is clogged therfore gives a bad reading.unfortunately you have to have a scan done but try an independant small shop that delas exclusively with foreign cars such as porche andd mercedez. the will have the correct scan tool and will be much cheaper than a dealership. your cost should be no more than 50 dollars US ... please rate this. thanks
Posted on Sep 23, 2008
nox is from running lean..... its realy high temps that cause this.......... replace the o2 sensors this should cure that any more help let me know
Posted on Oct 24, 2008
Some vehicles require very specific drive cycles (called "drive traces"
if you perform them on a road simulator or dyno) to activate certain
self-checks like the catalyst and EVAP monitors.
As a general rule, doing some stop-and-go driving around town at speeds
up to about 30 mph followed by five to seven minutes of steady 55 mph
highway speed driving will usually set most or all of the monitors.
Consequently, if you're checking an OBD II system and discover that one
or more of the monitors have not run, it may be necessary to test drive
the vehicle to set the remaining monitors.
You should talk to a good emission tec, if this is not throwing a code, it is hard to say if that one of the components could be bad. O2,pump,convert, HeO2, every part of the emission system.
With a 1000 miles, and doing what is says above just before the test, and ending driving at the test
should be plenty. If it is not, you will have to have each emission part checked, or when the computer
is plugged in it might show a code that did not trip dash light.
Posted on Mar 27, 2009
I had the same problem, then took my car to an expert repair shop who diagnosed the sensors and
found no problem with the car. They notified the DMV who was unaware of the problem, who then told the repair shop (John's Bascom Automotive) that they will adjust their computer system to allow a "two speed idle test". My bill was $95 and I still have to pay for a smog test after driving around for
a couple of days to clear the computer monitors, a fair amount and I gladly paid it.
John advised me that I'd get no satisfaction with Toyota or the DMV. I went to the dealership where I
bought the car and they said that the smog stations don't know what they're doing. They charge
about $100 and work around the P0500 code but it takes them about two hours to do this. I told
them that I should have been notified about the dyno none-compatability by Toyota and that Toyota
should have notified the DMV beforehand. I wonder how many speed sensors are being replaced by
unknowing smog shops around the state. I got Toyota's main customer support phone number and
will call them Monday. I'm going to get my pound of flesh ($95 worth) from the DMV next week also.
Posted on Jun 26, 2009
A code P0441 could mean one or more of the following has happened:
What does that mean? This indicates that a part of the EVAP control system is no longer fuctioning correctly. The EVAP system consists of many parts, including (but not limited to) the gas cap, fuel lines, carbon canister
, purge valve, and other hoses. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.
EVAP emission canister purge is contolled by a valve which allows engine vacuum to pull stored fuel vapors from fuel tank
into the engine to be burned, rather than be vented to atmosphere. A vacuum switch is used to detect when flow exists. If the PCM commands purge and sees that the switch is closed (indicating no detected purge flow) P0441 is set.
Posted on Jan 29, 2010
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