Question about 2000 Cadillac DeVille

1 Answer

Emission Failure I have a 2000 Deville DTS. The service engine light just came on and now my caddy has failed the emissions test as a result of problem P047. Can you give me some idea of what it might be?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 373 Answers

HI.. I read your comment,
But on my Computer nothing is there with that code.
ON midle of 1995, OBDII, cars, The format for all the codes are
with One latter, P,C,B,U, and 4 digits.
I'm sorry P047, not correspond to your car.

Posted on Jul 11, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

P0443 purge Evaporative Emission Control System Purge Control Valve Circuit Malfunction


Other probable causes:
1. Damaged or corroded connector terminal
2. Wire harness. Check for voltage, open, short to ground, short to voltage
3. Control unit in need of updating. This is not the same as simply resetting.
4. Faulty PCM or ECM
5. Vacuum leaks. Damaged hoses or improper routing
6. EVAP system problem(s). Check fuel cap, canister, valves and components

Jan 09, 2014 | Cadillac DeVille Cars & Trucks

Tip

Service engine soon light


A service engine soon light that flashes generally results form an ignition problem with the engine. A service engine soon light that stays on constant results from an emission control system malfunction. A diagnostic scan from the local parts store can determine which emission system is faulty.

on Oct 05, 2010 | Chevrolet 2500 Cars & Trucks

1 Answer

Failed an Emission test. Trouble codes: P0300 and P0305


if it has the brake lights as well for the ABS then i suspect a faulty computer ,end of story

Jun 09, 2012 | Lexus Cars & Trucks

1 Answer

What does check engine light mean


It means your vehicle's computer has determined that a component or system in your emission control system is not working properly.
When the light comes on, one or more diagnostic trouble codes (DTC) are stored in the engine control module. These DTCs remain even if the light goes out. To address a Check Engine Light problem, the DTCs are retrieved and the appropriate troubleshooting information is followed in order to determine the problem.
Every vehicle manufactured in the U.S. has to first pass an Environmental Protection Agency (EPA) test called the Federal Test Procedure. This sets the acceptable limits of wear and/or failure for the emission control system-i.e., what conditions will ultimately cause a Check Engine Light to illuminate. These standards are closely regulated. If the emission control system is faulty and the vehicle is polluting the air, the Check Engine Light illuminates to alert the driver of this condition. (Note: A vehicle in this condition would fail an emissions inspection or smog check.)
Don't confuse the Check Engine Light with the maintenance or service light. These lights illuminate when a routine service is due. They are usually triggered by mileage, gallons of gasoline consumed, or some other type of vehicle-use measurement.

Jan 01, 2011 | Toyota Tercel Cars & Trucks

1 Answer

Failed emission test, codes p1698, p1776, p0700. It is a 1999 Plymouth Grand Voyager, 3 liter


Strange that it failed the emission test. The codes given relate to the transmission computer not outputting the correct signals to the engine (power) control module ECU. Have you noticed any abrupt gear shifts lately? I wonder if the emission test failure is related. Sometimes the gear selection failure can be as result of the ECU getting the incorrect information from a faulty throttle position sensor TPS. The ECU relays the information to the transmission controller and this snatches at the gear shift at slightly the wrong time. A faulty TPS might also be responsible for the ECU setting the wrong fuel air mixture and this would result in inappropriate exhaust gas emission. The TPS is on the throttle plate shaft and is located on the outside of the throttle body. The two outer pins on the TPS plug have 0 volts and 5 volts. The middle pin sends the voltage to the ECU according to the throttle shaft position between 0 to 5 volts. Check out the TPS thoroughly before looking for something more complicated. Then next I would pull the sockets from the respective control units and make sure all the contact pins are clean and bright to ensure good inter connection

Aug 24, 2010 | Plymouth Grand Voyager Cars & Trucks

1 Answer

Failed smog check


How well does the vehicle run?

Assuming that the engine did pass the EGR function test on the emission test results, and the MIL (Malfunction Indicator Light) or check engine light is not on when the engine is running, and if you are not sure when the last time it was that the engine had a complete tune-up, with distributor cap, ignition rotor, spark plugs, spark plug wires, air and fuel filters, then a complete tune-up would certainly help, and if the engine oil and oil filter have not been changed in a while, then they should also be changed before an emission test because long used engine oil traps carbon and it will show up as higher CO on the emission test because the emission analyzer will be able detect the higher CO from the engine oil through the PCV valve.

However, it would seem from those HC readings that there is a vacuum leak, and carefully inspect all of the vacuum lines for any cracks or damage, (especially the vacuum line to the fuel pressure regulator) because cracks in the vacuum lines seem to like to hide underneath the lines.

The emission label under the hood should have the vacuum line routing diagram printed on it, and the vacuum lines should all be checked to be certain that they are all connected correctly.

Here is the firing order diagram for that vehicle to help assist you tune-up the vehicle.


e696e87.jpg

Jul 09, 2010 | 1997 Honda Civic

2 Answers

Check engine light indicating a need to replace the catalitic converter. What is the warranty on catalitic converters


usually 100,000 miles , some are 70,000 miles. just call your local toyota dealer parts or service dept. , or look in your owners manual under the warranty section of your manual.

Good luck with your problem

Oct 01, 2009 | 2003 Toyota Corolla

1 Answer

2000 Saturn SL2 fails smog due to failure of OBD Self test


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.

Mar 27, 2009 | 2000 Saturn SL

2 Answers

Failed emission test due to not complete code


Change thermostat and temp sensor....do another drive cycle....Plug your scanner back in and see if all the monitors are finished their tests...If not find out which monitor is still running...

Mar 05, 2009 | 1997 Saturn SL

Not finding what you are looking for?
2000 Cadillac DeVille Logo

151 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cadillac Experts

yadayada
yadayada

Level 3 Expert

60867 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

Are you a Cadillac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...