Question about 2000 Saturn SL

1 Answer

What has to be done to complete drive cycle.

What has to be done while driving to complete all monitor tests on the OBD2 computer systems drive cycle, after clearing DTC codes. I can only get 5 out of the 9 monitors completed.

Posted by f15actace on


1 Answer


  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.


    An expert whose answer got voted for 20 times.

  • Expert
  • 102 Answers

To perform an OBDII Driving cycle do the following:

  1. Cold Start. In order to be classified as a cold start the engine coolant temperature must be below 50°C (122°F) and within 6°C (11°F) of the ambient air temperature at startup. Do not leave the key on prior to the cold start or the heated oxygen sensor diagnostic may not run.
  2. Idle. The engine must be run for two and a half minutes with the air conditioner on and rear defroster on. The more electrical load you can apply the better. This will test the O2 heater, Passive Air, Purge "No Flow", Misfire and if closed loop is achieved, Fuel Trim.
  3. Accelerate. Turn off the air conditioner and all the other loads and apply half throttle until 88km/hr (55mph) is reached. During this time the Misfire, Fuel Trim, and Purge Flow diagnostics will be performed.
  4. Hold Steady Speed. Hold a steady speed of 88km/hr (55mph) for 3 minutes. During this time the O2 response, air Intrusive, EGR, Purge, Misfire, and Fuel Trim diagnostics will be performed.
  5. Decelerate. Let off the accelerator pedal. Do not shift, touch the brake or clutch. It is important to let the vehicle coast along gradually slowing down to 32km/hr (20 mph). During this time the EGR, Purge and Fuel Trim diagnostics will be performed.
  6. Accelerate. Accelerate at 3/4 throttle until 88-96 km/hr (55-60mph). This will perform the same diagnostics as in step 3.
  7. Hold Steady Speed. Hold a steady speed of 88km/hr (55mph) for five minutes. During this time, in addition to the diagnostics performed in step 4, the catalyst monitor diagnostics will be performed. If the catalyst is marginal or the battery has been disconnected, it may take 5 complete driving cycles to determine the state of the catalyst.
  8. Decelerate. This will perform the same diagnostics as in step 5. Again, don't press the clutch or brakes or shift gears.

Posted on Aug 14, 2009


Add Your Answer


Uploading: 0%


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



Related Questions:

2 Answers

How to reset a computer on a mercury cougar 2001

Use a OBD2 fault code reader or scanner to reset the system. A full wipe is done by disconnecting the battery negative cable for 5 min's. I do not recommend this as you will then loose all stored and learned engine and transmission data and have to perform an OBD2 drive cycle test to complete/pass any emission testing required.

Apr 04, 2017 | Mercury Cougar Cars & Trucks

1 Answer

Trying to get 2008 Jaguar VDP inspected after service done. I've driven 200+ miles and computer still reads not ready. What's next step?

You must complete a OBD2 drive cycle, unless you do the kind of driving that satisfies the computer testing you can drive for a year. Go here for the test and how you need to drive to complete the drive cycle.

1 Ensure that fuel filler cap is fully closed (minimum three clicks).

2 Fuel level > 30% and < 85%.

3 Using WDS scanner perform ECM DTC Clear (even if no DTCs are flagged).

4 Drive vehicle for a minimum of 2 minutes, and until engine is at normal operating temperature.

5 Using WDS, ensure that the EVAP Canister Purge Valve is operating by observing "PURGE VAPOR MANAGEMENT VALVE - DUTY CYCLE". If the valve is not

active, ECM adaptions have not been learned. Conduct a "green ECM" Drive Cycle as described in Technical Service Bulletin.

6 Drive vehicle to the road where the EVAP System Drive Cycle will be conducted. Stop vehicle and switch OFF the ignition. Leave ignition OFF for 30 seconds,

then restart the engine.

7 Accelerate briskly to 80 km/h (50 mph) ensuring that the engine speed reaches a minimum of 3500 rpm for a minimum of 5 seconds.


FUEL TANK PRESSURE - VAPOR RECOVERY SYSTEM". Avoiding high engine loads, drive the vehicle steadily between 65 km/h (40 mph) and 100 km/h (60

mph). Avoid driving conditions that will produce excessive fuel movement. WDS should give an indication that the test is active (it may take up to 30 minutes

before the test will initialize). When the test has initialized (EVAP Canister Close Valve CLOSED), it will take approximately 90 seconds for the test to complete.

9 (0.020 inch EVAP Test) Continue driving vehicle as explained in Step 8 for an additional 10 minutes.

10 Gently coast the vehicle to a stop. Allow the engine to idle for 2 minutes and view WDS "PURGE VAPOR MANAGEMENT VALVE - DUTY CYCLE", "CANISTER


active. When the test has initialized (EVAP Canister Close Valve CLOSED), it will take approximately 90 seconds for the test to complete.

11 If the 0.020 inch EVAP Test is not activated, the purge system vapor concentration may be too great. To reduce the vapor concentration proceed as follows:

12 Drive the vehicle for an additional 30 minutes avoiding driving conditions that will produce excessive fuel movement. Repeat Step 10. If the 0.020 inch EVAP

Test is still not activated, repeat the Drive Cycle from Step 6.
13 Using WDS, check for and clear flagged DTCs

Nov 04, 2016 | Jaguar Cars & Trucks

1 Answer

What do codes P0411, P1000

P1000 code means the codes were cleared or the battery was disconnected
Powertrain Control Module (PCM) Reset Description All OBDII scan tools support the powertrain control module (PCM) reset.
The PCM Reset allows the scan tool to command the PCM to clear all emission-related diagnostic information. When resetting the PCM, a DTC P1000 will be stored in the PCM until all the OBD II system monitors or components have been tested to satisfy a drive cycle, without any other faults occurring. For more information about a drive cycle, refer to Drive Cycles .
The following events occur when a PCM reset is performed:
  • Clears the number of Diagnostic Trouble Codes (DTCs).
  • Clears the DTCs.
  • Clears the freeze frame data.
  • Clears diagnostic monitoring test results.
  • Resets status of the OBD II system monitors.
  • Sets DTC P1000.

P0411 Secondary Air Injection System Incorrect Flow Detected

neither of these could cause a no start or no crank problem . Is the battery good an do you have good connections on the battery ? Do the headlamps show bright when on ?

Oct 14, 2015 | 1997 Lincoln Continental

2 Answers

I have a ford1998 expedition 4x4 5.4 and the only code is a1000 what is the problem please help

My info shows it having something to do with the fuel pump. Hope this helps.

Apr 06, 2015 | 1998 Ford Expedition

1 Answer

What is the drive cycle computer rest for 2010 corolla

drive cycle, why not just forget that. I do. (mostly)
what do I do, i reset the PCM with my $10 scan tool
when dont, all monitors are now reset, ALL !

drive cycles to finish off all monitors? (a goal for say smog testing)

that is easy most clear fast. running fast.
but not EVAP, can take up to 30min but
if fuel tank is fuel, it never completes EVAP until 1/4 lower, 3/4 full and less.
EGR tests? can be easy if you drive fast, and then coast to a stop
both tests cleared. (sans complete)
monitors are (no appliclable, not ready or complete)
to do smog, all must be complete and no DTCs. (rare exceptions)

the drive cycle means number of times it takes to set a code for one test monitor or clear one.
some newer cars take 2 drives to set them.
and is important, the FSM covers this.
why not post symptoms or reasons for asking.

just curious?, then read the ASE book on OBD2 technology. RTM.

Oct 10, 2014 | 2010 Toyota Corolla

1 Answer

Drive cycle

is this comm error or did you mean , OBD2 Monitors incomplete;
dead comms>
1: not usa car, must be OBD2 and many are not up to 2006 world wide.
2: pin 16 fuse blown to OBD2 port.
3: wrong tool, got non can-bus tool and car is Can-bus only car.
4: does car run, , if not fuses to ECU blown, ECU cant talk with zero power, ever.

monitors not complete.
there must not be active DTC errors, go them.
you fix the car an clear DTC errors
then drive car for 30min, (EVAP monitor can take that long)
if tank is full the EVAP monitor. will fail to clear.

got this?
got red?

or what, do SAY

Jul 29, 2014 | 2004 Suzuki Forenza

1 Answer

How to remedy dtc code P1000

A dtc p1000 isn't a fault code, it basically. means you have to continue to drive you car until all engine monitors finish their test and no faults are happening. When you either disconnect your battery or had someone run a scanner test on it and clear any fault codes, it clears the memory of the p.c.m and monitors that watch certain systems on the car, o2 sensors, misfire, evap system, cat efficiency and others to make sure everything is has to go through 3 drive cycles and not see any fault for the p1000 code to go away..How long dies a drive cycle take? All cars are different, you have to drive above 70 mph for a certain amount of time, have to do no brake slow to stops a few times, maintain 35 for an amount of time and so the dealership each tech has a sheet copied out of shop manual showing what we have to do to complete a drive cycle.sometimes you get it first shot, sometimes it takes a few trips.just 1 wrong and monitors will not pass..just be patient and continue to drive.Take it out on the highway and drive 10-20 miles and see what happens....happy drivi

Jun 15, 2014 | 1995 Lincoln Town Car

1 Answer

Need to know the drive cycle for a mercury villager 2001without any check engine lights or any lights on

ok , i do now what driving cycle is, that is a top OBD2 name.
and the answer is different for each DTC code.
what we do, is ignore all that BS and reset it our selves.
with the $7 scan tool.
then drive, unless wasted time is not an issue?
the accurate answer is only in the FSM under each DTC.
or here. its all there....
alldata dot com.

if the CEL is off, there is no driving cycle.
or do you mean , the driving cycle to COMPLETE ALL monitors
THAT IS A , totally different system and answer.
here are some guide lines.
drive over 45mph and get coolant (engine temp) fully hot.
normal driving.
if the tanks is full, drive it unti. its 3/4 or less.
if you dont do that the EVAP system will never kick off.
EVAP is very slow to test, the others are far faster.
EGR can have 2 tests. and may require coasting to a stop.
from 45MPH or faster, my one car is 28mph, others vary.
there can be 13 monitors on some cars. Up to.
here is an older car ,set of 11.
i drive until all are complete, the red here are not, so scan
and drive and scan , and then go to the smog stations.
your newer car, has longer list.

Oct 08, 2013 | 2001 Mercury Villager

1 Answer


A drive cycle is a test that the on board computer performs while you drive the car to prove out all the systems on the car that control tailpipe emissions, if it finds a problem it will trigger a check engine light and and the drive cycle will not complete. The correct name of this is the "OBD2 ELECTRONIC ENGINE CONTROL DRIVE CYCLE TEST". "OBD2" is short for On Board Diagnostics generation 2. The test is just driving the car at various speeds, stop and go traffic and idle time, make sure you have at least 5 gallons of gas in the tank as well. Many folks disconnect the battery to clear a Check Engine light when a smog is due, this resets the computer (known as the PCM) and then you must complete a OBD2 drive cycle, which of course will turn the Check Engine light back on.

Feb 14, 2012 | 1997 Plymouth Neon

1 Answer

Wats the code p1000 on my 2002 jaguar x type

P1000 JAGUAR - On Board Diagnostic System Readiness Test Not Complete, this is known as the OBD2 drive cycle.

Possible causes - The vehicle is new from the factory.
- Battery or Powertrain Control Module (PCM) had recently been disconnected.
- An OBD monitor failure occurred before completion of an OBD drive cycle.
- PCM Detected Trouble Codes (DTC) have recently been cleared with a scan tool.
When is the code detected? If DTC P1000 is triggered after DTCs have been cleared, all engine management OBD diagnostic monitor drive cycles have not been cleared. P1000 JAGUAR Description The On Board Diagnostic (OBD) monitors are performed during the OBD Drive Cycle. P1000 is stored in continuous memory if any of the OBD monitors do not carry out their full diagnostic check.

Feb 18, 2011 | 1999 Jaguar XK8

Not finding what you are looking for?
2000 Saturn SL Logo

1,706 people viewed this question

Ask a Question

Usually answered in minutes!

Top Saturn Experts


Level 3 Expert

85239 Answers

Thomas Perkins
Thomas Perkins

Level 3 Expert

14866 Answers

Joe Taylor
Joe Taylor

Level 3 Expert

2228 Answers

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

Answer questions

Manuals & User Guides