Failed emissions (o2 sensors not showing ready) - is this due to tune?
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From: ChiTown
e46 m3, w211 e55
Failed emissions (o2 sensors not showing ready) - is this due to tune?
My e55 is stock w the exception of EC tune. When I went for emissions I am getting "not ready" status for my o2 sensors. Is this caused by the tune? What are my options to pass?
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From: toronto
Gallado Spyder / AMG C63S / Cayenne
umm .... no cat delete ?
did you park the car for a long time then went for it ?
that's what happened to me in Toronto ... I got 2 not readys and they gave me a conditional pass.
I don't have primary cats.
did you park the car for a long time then went for it ?
that's what happened to me in Toronto ... I got 2 not readys and they gave me a conditional pass.
I don't have primary cats.
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From: Houston
2003 W211 E55, 2003 W220 S600
maybe they are turned off in the ECU remap you can ask your tuner to turn them on.
once they are one it will take about 100 miles of driving to get the monitors to the ready status.
once they are one it will take about 100 miles of driving to get the monitors to the ready status.
Thread Starter
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Joined: Jan 2012
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From: ChiTown
e46 m3, w211 e55
I am completely stock w exception of the EC stock tune. all cats in tact. car is driven at least one or twice a week.
Thread Starter
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From: ChiTown
e46 m3, w211 e55
Does anyone know for sure if the EC tune turns them off? I am still waiting on a response from EC.
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From: Orbiting the planet
This place is a joke.
EC will typically turn them off if you have headers. Since you don't, you'll have to ask them for a new tune leaving them on. Unless of course you didn't drive the car long enough before getting it tested.
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From: Knoxville, TN
2005 E55
No they are not turned off if you are speaking of the rear O2 sensors and a ec tune. I have two widebands in place of the rear and get cat codes for rear cats because they are not plugged up with the ec tune. I tried plugging them in and hung them up with zip ties and I still get cat codes.
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From: Houston
2003 W211 E55, 2003 W220 S600
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From: Canada
07 E63 + 07 CLK63CAB
dchl21, you got very lucky my friend, here in Ontario a 2000 model year car is allow 2 not ready codes, a 2005 should have been only 1 not ready for the E test to get a pass.
The other route is spend 450 dollars in repairs then if that does not solve the issue then you get a conditional pass, that happens once then the car cannot be E test certified again in your name or for resale.
The other route is spend 450 dollars in repairs then if that does not solve the issue then you get a conditional pass, that happens once then the car cannot be E test certified again in your name or for resale.
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From: America
04 E55 AMG
https://mbworld.org/forums/w211-amg/...rough-sds.html i'm not sure if you can override the euro charged Tune with star but here's the directions/link... if it works
https://mbworld.org/forums/w211-amg/...-addition.html and I just drove this on the link in there because I like to
https://mbworld.org/forums/w211-amg/...-addition.html and I just drove this on the link in there because I like to
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From: The Granite State
.
Totally solvable...
I had my primary cats removed when the MBH headers were installed. The EC tune turned the O2 sensors off. If your inspection requires all your readiness monitors to be correct, you will need to take the additional step of changing your regional coding to something that doesn't use those O2 sensors. Jerry at EC can do it for you (requires you to ship him the ECU), or if you have access to STAR, they can probably talk you through the process over the phone.
I sent in my ECU, and Jerry fixed it immediately and shipped it back. Within about 80 miles all the readiness monitors were cleared and perfect.
Basically, most tuners assume you don't care about the readiness monitors and just disable them since that's possible through a flash tune. The "real" solution requires the physical ECU.... More hassle than most people want to deal with.
-G
I had my primary cats removed when the MBH headers were installed. The EC tune turned the O2 sensors off. If your inspection requires all your readiness monitors to be correct, you will need to take the additional step of changing your regional coding to something that doesn't use those O2 sensors. Jerry at EC can do it for you (requires you to ship him the ECU), or if you have access to STAR, they can probably talk you through the process over the phone.
I sent in my ECU, and Jerry fixed it immediately and shipped it back. Within about 80 miles all the readiness monitors were cleared and perfect.
Basically, most tuners assume you don't care about the readiness monitors and just disable them since that's possible through a flash tune. The "real" solution requires the physical ECU.... More hassle than most people want to deal with.
-G
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From: Maryland
Eurocharged 2004 E500, Eurocharged ECU/TCU 2005 SL600, 2010 Caddy SwaggerWagon
How long ago was the car flashed? Have you done a reflash yourself recently, assuming you have the handheld?
Has your battery died, or been disconnected recently?
I was recently reflashed and took the car the next day for emissions. Too many readiness monitors not ready, same as you. Got an extension, then we've gotten snow every single week since then. Whenever I could, I'd take it on grocery runs and took it to the office twice in a month. Finally took it back in this week and it passed no problem. Just needed some miles after the tune for the monitors to come back online. Emissions station asked me if I'd had the battery replaced recently, as that would reset the monitors. I of course nodded my head and said uh-huh.
Has your battery died, or been disconnected recently?
I was recently reflashed and took the car the next day for emissions. Too many readiness monitors not ready, same as you. Got an extension, then we've gotten snow every single week since then. Whenever I could, I'd take it on grocery runs and took it to the office twice in a month. Finally took it back in this week and it passed no problem. Just needed some miles after the tune for the monitors to come back online. Emissions station asked me if I'd had the battery replaced recently, as that would reset the monitors. I of course nodded my head and said uh-huh.
Last edited by Benz-O-Rama; Feb 17, 2014 at 10:11 PM.
Thread Starter
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Joined: Jan 2012
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From: ChiTown
e46 m3, w211 e55
Car hasent been flashed since initial tune. EC is going to help me reflash it. Hopefully that takes care of it.
How many miles do you need to log after a flash before it will show ready status again?
How many miles do you need to log after a flash before it will show ready status again?
How long ago was the car flashed? Have you done a reflash yourself recently, assuming you have the handheld?
Has your battery died, or been disconnected recently?
I was recently reflashed and took the car the next day for emissions. Too many readiness monitors not ready, same as you. Got an extension, then we've gotten snow every single week since then. Whenever I could, I'd take it on grocery runs and took it to the office twice in a month. Finally took it back in this week and it passed no problem. Just needed some miles after the tune for the monitors to come back online. Emissions station asked me if I'd had the battery replaced recently, as that would reset the monitors. I of course nodded my head and said uh-huh.
Has your battery died, or been disconnected recently?
I was recently reflashed and took the car the next day for emissions. Too many readiness monitors not ready, same as you. Got an extension, then we've gotten snow every single week since then. Whenever I could, I'd take it on grocery runs and took it to the office twice in a month. Finally took it back in this week and it passed no problem. Just needed some miles after the tune for the monitors to come back online. Emissions station asked me if I'd had the battery replaced recently, as that would reset the monitors. I of course nodded my head and said uh-huh.
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From: Maryland
Eurocharged 2004 E500, Eurocharged ECU/TCU 2005 SL600, 2010 Caddy SwaggerWagon
So, there's no right answer. Drive it, and keep scanning it until they're all ready. Hopefully you have OBD scanner or STAR.
If not, drive it for a full tank of fuel?
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From: Northern VA
W211
Readiness Code Resetting Procedure (Generic Drive Cycle)
Readiness Monitors and Drive Cycles
Readiness Monitors and Drive Cycles
"Readiness Monitors" are indicators that demonstrate whether or not emission system
components are being monitored (checked) by the OBD-II system. If a monitor is set to
"Ready" the monitor is checking its assigned component and, if no DTC's are present,
the vehicle should pass an emissions test.
components are being monitored (checked) by the OBD-II system. If a monitor is set to
"Ready" the monitor is checking its assigned component and, if no DTC's are present,
the vehicle should pass an emissions test.
NOTE:
If the appropriate number of Readiness Monitors (codes) are not flagged as
"Ready", in most cases, the vehicle can not pass an emissions test. See State and
Federal Laws.
The status of all readiness monitors is reset to "Not Ready" :
Each time DTC's are cleared.
The battery is disconnected.
The ECM is disconnected.
The status of all readiness monitors is reset to "Ready" :
After DTC's are cleared and the appropriate drive cycle(s) is successfully completed.
Manufacturers are required to validate monitors during the first 23 minutes (1372
seconds) of the Federal Test Procedure Drive Cycle.
EPA Federal Test Procedure
"Ready", in most cases, the vehicle can not pass an emissions test. See State and
Federal Laws.
The status of all readiness monitors is reset to "Not Ready" :
Each time DTC's are cleared.
The battery is disconnected.
The ECM is disconnected.
The status of all readiness monitors is reset to "Ready" :
After DTC's are cleared and the appropriate drive cycle(s) is successfully completed.
Manufacturers are required to validate monitors during the first 23 minutes (1372
seconds) of the Federal Test Procedure Drive Cycle.
EPA Federal Test Procedure
=RRP 6L]HGIRU3ULQW
EPA Urban Dynamometer Driving Schedule
Completing the Drive Cycle successfully one (1) time should reset most drive cycle
monitors to a "Ready" status. However, there are "two trip" monitors, which require that
the drive cycle be successfully completed two (2) times, to achieve a "Ready" status.
Furthermore, systems which use averaging, may require the drive cycle to be completed
more than 2 times.
Verify the status of the readiness monitors with the appropriate function of your scan
tool.
Completing the Drive Cycle successfully one (1) time should reset most drive cycle
monitors to a "Ready" status. However, there are "two trip" monitors, which require that
the drive cycle be successfully completed two (2) times, to achieve a "Ready" status.
Furthermore, systems which use averaging, may require the drive cycle to be completed
more than 2 times.
Verify the status of the readiness monitors with the appropriate function of your scan
tool.
NOTE:
Certain vehicles have known OBD-II Readiness issues. Please be sure to review
TSB's for special circumstances and or exceptions to readiness monitor resetting
procedures.
TSB's for special circumstances and or exceptions to readiness monitor resetting
procedures.
Before Beginning the Drive Cycle
Check the status of the Readiness Monitors, check for DTC's, correct faults, clear DTC's
before beginning the Drive Cycle.
before beginning the Drive Cycle.
Begin Drive Cycle
The vehicle should be driven approximately 7.5 miles within a period of approx. 23
minutes (1372 seconds) from a cold start. However, due to manufacture variations, it is
necessary to perform only as much of the Drive Cycle as is necessary to reset the
required monitors to a "Ready" status. Operate the throttle smoothly to obtain best
results.
minutes (1372 seconds) from a cold start. However, due to manufacture variations, it is
necessary to perform only as much of the Drive Cycle as is necessary to reset the
required monitors to a "Ready" status. Operate the throttle smoothly to obtain best
results.
Do not shut the engine off during the drive cycle.
CAUTION:
Obey all traffic laws and drive in a safe manner!
NOTE:
Extreme driving conditioning such as very high/low temperatures, rough roads
and high altitudes may prevent some monitors from attaining a "Ready" status.
and high altitudes may prevent some monitors from attaining a "Ready" status.
=RRP 6L]HGIRU3ULQW
Step
1
1
(Engine Cold)
Start engine, idle 20 seconds. Accelerate gradually and drive
at 20-25 mph for 1 minute, varying speed.
Step Accelerate gradually to 32 mph within 35 seconds. Decelerate to 0 mph in 10
2 seconds. Idle for 40 seconds.
Step
3
Accelerate at part throttle to 25 mph in 10 seconds. Cruise at 17-25 mph for
15 seconds. Accelerate gradually to 57 mph in 45 seconds. Cruise at 50-56
mph for 1 minute. Decelerate gradually to 0 mph in 40 seconds. Idle for 15
seconds.
Step
4
Accelerate at part throttle to 36 mph and maintain for 10 seconds. Decelerate
to 0 mph in 15 seconds. Idle for 5 seconds.
Step
5
Accelerate to 30 mph and back to 0 mph within 30 seconds. Idle for 20
seconds.
Step
6
Accelerate to 36 mph in 20 seconds. Drive at 35 mph for 20 seconds.
Decelerate to 0 mph in 15 seconds. Idle 5 seconds.
Step
7
Accelerate gradually to 26 mph and decelerate to 0 within 40 seconds. Idle 15
seconds.
Step
8
Accelerate to 27 mph in 40 seconds. Decelerate to 0 mph in 10 seconds. Idle
25 seconds.
Step
9
Accelerate to 26 mph in 15 seconds, maintain speed for 10 seconds,
decelerate to 0 mph in 10 seconds. Idle 15 seconds.
Step
10
Accelerate to 23 mph in 20 seconds, decelerate to 0.5 mph in 10 seconds (no
complete stop). Accelerate to 28 mph and back to 0 mph (momentary stop 1
second) within 35 seconds.
Step
11
Accelerate gradually to 34 mph in 45 seconds. Vary speed between 34 and 19
mph for 2 minutes. Decelerate from 25 to 0 mph in 25 seconds. Idle for 5
seconds.
Step
12
Accelerate to 29 mph in 15 seconds, decelerate gradually to 0 mph in 45
seconds. Idle for 30 seconds.
Step
13
Accelerate gradually to 28 mph and back to 0 mph (momentary stop 1
second) within 50 seconds. Accelerate gradually to 27 mph and back to 0 mph
within 55 seconds. Idle for 15 seconds.
Step
14
Accelerate to 24 mph and back to 0 mph within 18 seconds. Idle for 10
seconds. Accelerate gradually to 22 mph and back to 0 mph within 50
seconds. Idle for 8 seconds.
Step
15
Accelerate gradually to 30 mph within 50 seconds. Decelerate to 0 mph in 10
seconds. Idle for 25 seconds.
Step
16
Accelerate to 23 mph and back to 0 mph within 30 seconds. Idle for 10
seconds.
Step
17
Repeat steps 1 - 16 once again. Recheck the status of the "Readiness
Monitors".
at 20-25 mph for 1 minute, varying speed.
Step Accelerate gradually to 32 mph within 35 seconds. Decelerate to 0 mph in 10
2 seconds. Idle for 40 seconds.
Step
3
Accelerate at part throttle to 25 mph in 10 seconds. Cruise at 17-25 mph for
15 seconds. Accelerate gradually to 57 mph in 45 seconds. Cruise at 50-56
mph for 1 minute. Decelerate gradually to 0 mph in 40 seconds. Idle for 15
seconds.
Step
4
Accelerate at part throttle to 36 mph and maintain for 10 seconds. Decelerate
to 0 mph in 15 seconds. Idle for 5 seconds.
Step
5
Accelerate to 30 mph and back to 0 mph within 30 seconds. Idle for 20
seconds.
Step
6
Accelerate to 36 mph in 20 seconds. Drive at 35 mph for 20 seconds.
Decelerate to 0 mph in 15 seconds. Idle 5 seconds.
Step
7
Accelerate gradually to 26 mph and decelerate to 0 within 40 seconds. Idle 15
seconds.
Step
8
Accelerate to 27 mph in 40 seconds. Decelerate to 0 mph in 10 seconds. Idle
25 seconds.
Step
9
Accelerate to 26 mph in 15 seconds, maintain speed for 10 seconds,
decelerate to 0 mph in 10 seconds. Idle 15 seconds.
Step
10
Accelerate to 23 mph in 20 seconds, decelerate to 0.5 mph in 10 seconds (no
complete stop). Accelerate to 28 mph and back to 0 mph (momentary stop 1
second) within 35 seconds.
Step
11
Accelerate gradually to 34 mph in 45 seconds. Vary speed between 34 and 19
mph for 2 minutes. Decelerate from 25 to 0 mph in 25 seconds. Idle for 5
seconds.
Step
12
Accelerate to 29 mph in 15 seconds, decelerate gradually to 0 mph in 45
seconds. Idle for 30 seconds.
Step
13
Accelerate gradually to 28 mph and back to 0 mph (momentary stop 1
second) within 50 seconds. Accelerate gradually to 27 mph and back to 0 mph
within 55 seconds. Idle for 15 seconds.
Step
14
Accelerate to 24 mph and back to 0 mph within 18 seconds. Idle for 10
seconds. Accelerate gradually to 22 mph and back to 0 mph within 50
seconds. Idle for 8 seconds.
Step
15
Accelerate gradually to 30 mph within 50 seconds. Decelerate to 0 mph in 10
seconds. Idle for 25 seconds.
Step
16
Accelerate to 23 mph and back to 0 mph within 30 seconds. Idle for 10
seconds.
Step
17
Repeat steps 1 - 16 once again. Recheck the status of the "Readiness
Monitors".
NOTE:
Remember, clearing DTC's or interrupting power to the ECM after the readiness
monitors have been reset to "Ready" will require that the Drive Cycle be repeated.
Completing the Drive Cycle successfully one (1) time should reset most drive cycle
monitors to a "Ready" status. However, there are "two trip" monitors, which require that
the drive cycle be successfully completed two (2) times, to achieve a "Ready" status.
Furthermore, systems which use averaging, may require the drive cycle to be completed
more than 2 times. It is necessary to perform only as much of the Drive Cycle as is
necessary to reset the required monitors to a "Ready" status.
monitors have been reset to "Ready" will require that the Drive Cycle be repeated.
Completing the Drive Cycle successfully one (1) time should reset most drive cycle
monitors to a "Ready" status. However, there are "two trip" monitors, which require that
the drive cycle be successfully completed two (2) times, to achieve a "Ready" status.
Furthermore, systems which use averaging, may require the drive cycle to be completed
more than 2 times. It is necessary to perform only as much of the Drive Cycle as is
necessary to reset the required monitors to a "Ready" status.
End Drive Cycle
Junior Member
Joined: Nov 2007
Posts: 16
Likes: 1
From: Huntington Beach
2011 E550 Coupe, 2002 CLK55 AMG
Holy crap...seriously? Does all this have to take place on the 3rd Wednesday during a full moon as well? I am having the same issue right now (3 sensors not checking off) so I cannot pass emissions. This is nuts...
Senior Member
Joined: Aug 2004
Posts: 345
Likes: 2
From: Chicago burb
95 C36
Thanks in advance!
Junior Member
Joined: Oct 2015
Posts: 37
Likes: 0
05 E55 AMG, 05 S2000
I recently got into my E55.
I'm having this exact same issue. I have STAR/DAS just not sure where to go to check for ready of the systems.
All i'm trying to do is pass emissions so I can register the car...
I'm having this exact same issue. I have STAR/DAS just not sure where to go to check for ready of the systems.
All i'm trying to do is pass emissions so I can register the car...
