Do these three codes indicate a particular problem?
Thread Starter
Burning Brakes
Joined: Jun 2002
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From: Troy MI
Do these three codes indicate a particular problem?
I get these codes periodically
P0101 Mass Air Flow (MAF) System Performance
P0113 Intake Air Temp (IAT) Sensor Circuit High Voltage
P1111 Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage
P1111 is a history code, it would appear to me that 1111 and 0113 are basically the same.
P0101 Mass Air Flow (MAF) System Performance
P0113 Intake Air Temp (IAT) Sensor Circuit High Voltage
P1111 Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage
P1111 is a history code, it would appear to me that 1111 and 0113 are basically the same.
Thread Starter
Burning Brakes
Joined: Jun 2002
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From: Troy MI
Re: Do these three codes indicate a particular problem? (msuc5vette)
TTT, these codes keep popping back up, is it likely that I need a new IAT sensor, or does this combination indicate some other problem?
Melting Slicks
Joined: Aug 2001
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From: Wichita KS
Re: Do these three codes indicate a particular problem? (TooManyIDs)
Depending on the year, these would share the same connector. Do you see any problems with the plug or wiring?
Step 2 of the diagnostic for P1111 is to check if P0113 is set. If P0113 is also set then the mechanic is directed from the P1111 checklist to the P0113 checklist.
Not sure about when the change occurred, but later C5s have a combined MAF/IAT sensor.
Have any modifications to or maintenance of the air cleaner/intake area been made? May just be a bad connection.
Thread Starter
Burning Brakes
Joined: Jun 2002
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From: Troy MI
Re: Do these three codes indicate a particular problem? (mapman)
Depending on the year, these would share the same connector. Do you see any problems with the plug or wiring?
:iagree:
Step 2 of the diagnostic for P1111 is to check if P0113 is set. If P0113 is also set then the mechanic is directed from the P1111 checklist to the P0113 checklist.
Not sure about when the change occurred, but later C5s have a combined MAF/IAT sensor.
Have any modifications to or maintenance of the air cleaner/intake area been made? May just be a bad connection.
:iagree:
Step 2 of the diagnostic for P1111 is to check if P0113 is set. If P0113 is also set then the mechanic is directed from the P1111 checklist to the P0113 checklist.
Not sure about when the change occurred, but later C5s have a combined MAF/IAT sensor.
Have any modifications to or maintenance of the air cleaner/intake area been made? May just be a bad connection.
My car has the separate IAT and MAF.
[Modified by msuc5vette, 5:58 PM 5/3/2004]
Melting Slicks
Joined: Aug 2001
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From: Wichita KS
Re: Do these three codes indicate a particular problem? (msuc5vette)
.....
Could you post or point to this checklist? I do not have the service manual. The cold air was changed over a year ago, but the car was dyno tuned when I installed my the cam. After the car was tuned I didn't get a service engine light. My active handling warming up error pops up some times now too, which I have read to be associated with the IAT sensing a low temp.
My car has the separate IAT and MAF.
[Modified by msuc5vette, 5:58 PM 5/3/2004]
Could you post or point to this checklist? I do not have the service manual. The cold air was changed over a year ago, but the car was dyno tuned when I installed my the cam. After the car was tuned I didn't get a service engine light. My active handling warming up error pops up some times now too, which I have read to be associated with the IAT sensing a low temp.
My car has the separate IAT and MAF.
[Modified by msuc5vette, 5:58 PM 5/3/2004]
The "ACT HNDLG-WARMING UP" message on the IPC is not an error. The message appears when the Electronic Brake Control Module (EBCM) runs a functional check of the active handling system. The "WARM UP COMPLETE" message is displayed when the EBCM completes the functional check. At far as I know, the check has nothing to do with low outside temperature or the IAT sensor.
Thread Starter
Burning Brakes
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From: Troy MI
Re: Do these three codes indicate a particular problem? (mapman)
According to Jake Latham's FAQ the active handling warming up can be triggered by the IAT reading below 15 degrees.
http://www.jakelatham.com/c5/misc/faq.shtml#9-1
To me there would be no excuse for it to be "normal" for the car to diplay this message and take 15 minutes of driving for it to finish the warm up proceedure. I don't drive my car in the winter, but that would really **** me off if I had to deal with the activehandling not working for 15 minutes.
Do you disagree with the write up on this FAQ? I don't know the answer, but to me it makes sense that I am throwing a code for the IAT, at the same time the Active Handling Warming up message appears. The weird thing is that it almost never comes on the first time I start the car for the day, but about half the time I re-start it after driving it happens.
http://www.jakelatham.com/c5/misc/faq.shtml#9-1
To me there would be no excuse for it to be "normal" for the car to diplay this message and take 15 minutes of driving for it to finish the warm up proceedure. I don't drive my car in the winter, but that would really **** me off if I had to deal with the activehandling not working for 15 minutes.
Do you disagree with the write up on this FAQ? I don't know the answer, but to me it makes sense that I am throwing a code for the IAT, at the same time the Active Handling Warming up message appears. The weird thing is that it almost never comes on the first time I start the car for the day, but about half the time I re-start it after driving it happens.
Melting Slicks
Joined: Aug 2001
Posts: 3,039
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From: Wichita KS
Re: Do these three codes indicate a particular problem? (msuc5vette)
According to Jake Latham's FAQ the active handling warming up can be triggered by the IAT reading below 15 degrees.
http://www.jakelatham.com/c5/misc/faq.shtml#9-1
To me there would be no excuse for it to be "normal" for the car to diplay this message and take 15 minutes of driving for it to finish the warm up proceedure. I don't drive my car in the winter, but that would really **** me off if I had to deal with the activehandling not working for 15 minutes.
Do you disagree with the write up on this FAQ? I don't know the answer, but to me it makes sense that I am throwing a code for the IAT, at the same time the Active Handling Warming up message appears. The weird thing is that it almost never comes on the first time I start the car for the day, but about half the time I re-start it after driving it happens.
http://www.jakelatham.com/c5/misc/faq.shtml#9-1
To me there would be no excuse for it to be "normal" for the car to diplay this message and take 15 minutes of driving for it to finish the warm up proceedure. I don't drive my car in the winter, but that would really **** me off if I had to deal with the activehandling not working for 15 minutes.
Do you disagree with the write up on this FAQ? I don't know the answer, but to me it makes sense that I am throwing a code for the IAT, at the same time the Active Handling Warming up message appears. The weird thing is that it almost never comes on the first time I start the car for the day, but about half the time I re-start it after driving it happens.
IF THERE WAS a temperature sensor input to the Electronic Brake Control Module, it would make more sense for it to be from the Ambient Air Temperature sensor - but that is part of the Heating Ventilation and Air Conditioning system.
The ACTIVE HANDLING WARMING UP is NOT a malfunction, it is only a functional check by the EBCM of the active handling system.
I don't know the source of Mr Latham's FAQ relating Intake Air Temperature to the Active Handling System. You might want to get access to a copy of the Service Manual and check for yourself.
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Thread Starter
Burning Brakes
Joined: Jun 2002
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From: Troy MI
Re: Do these three codes indicate a particular problem? (mapman)
"The ACTIVE HANDLING WARMING UP is NOT a malfunction, it is only a functional check by the EBCM of the active handling system. "
How often would you say I should expect to see this message?
How often would you say I should expect to see this message?
Melting Slicks
Joined: Aug 2001
Posts: 3,039
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From: Wichita KS
Re: Do these three codes indicate a particular problem? (msuc5vette)
"The ACTIVE HANDLING WARMING UP is NOT a malfunction, it is only a functional check by the EBCM of the active handling system. "
How often would you say I should expect to see this message?
How often would you say I should expect to see this message?
The Service Manual does not identify the circumstances that trigger the EBCM to perform this functional check, just that the engine is on and the speed is less than 6 mph. I think Mr. Latham's FAQ might be on to something as to the message being triggered by starting the car with the wheels turned and beginning slow speed movement.
The first time it happened to me, I had been stopped for a few minutes after driving the car steady for several hours. Everything was already "WARMED UP" and I didn't know what to think. There is a blurb in the Owner's Manual about the message, it said not to worry, so I didn't.
If my car was doing this all the time, I would be concerned, but if it is just occasional, I wouldn't worry per the Owner's Manual.
Le Mans Master
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From: Slave to the evil empire
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St. Jude Donor '04
Re: Do these three codes indicate a particular problem? (mapman)
The Intake Air Temperature (IAT) sensor is used by the Powertrain Control Module (PCM) as an information source for ignition system functions. The Service Manual has no reference that I can find between the Anti Lock Brake System and the Intake Air Temperature sensor. The System description in the Service Manual for the ABS makes no reference to the IAT.
IF THERE WAS a temperature sensor input to the Electronic Brake Control Module, it would make more sense for it to be from the Ambient Air Temperature sensor - but that is part of the Heating Ventilation and Air Conditioning system.
The ACTIVE HANDLING WARMING UP is NOT a malfunction, it is only a functional check by the EBCM of the active handling system.
IF THERE WAS a temperature sensor input to the Electronic Brake Control Module, it would make more sense for it to be from the Ambient Air Temperature sensor - but that is part of the Heating Ventilation and Air Conditioning system.
The ACTIVE HANDLING WARMING UP is NOT a malfunction, it is only a functional check by the EBCM of the active handling system.
I get this message 3 or 4 times a year on my car and I don't believe it has anything to do with the outside air temp, I think it's just telling you the computer needs to "warm" up
Advanced
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From: Chandler AZ
Re: Do these three codes indicate a particular problem? (msuc5vette)
I have had the P0113 and P1111 intermittent for about a year on my '99 FRC. Also got "active handling warming up" message. Finally found a break in the tan wire that goes to the IAT sensor in the air bridge. The break was inside the weatherpak connector itself. GM sells a new connector for about $20. that you just wire in. I found this with a digital voltmeter held on the tan wire in the connector and the 5 volt current would go off and on as I twisted the wire. All better now. Good Luck. :chevy
Advanced
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From: Chandler AZ
Re: Do these three codes indicate a particular problem? (msuc5vette)
As added information, on page 5-282 of the 1999 service manual, the DIC codes associated with the antilock brake system are listed. Following is a quote-"ACT/HNDLG-WARMING UP (JL4) This message is displayed if the SWPS (steering wheel position sensor) has not been centered after 30 seconds. This message is also displayed if the underhood temperature sent from the BCM is too cold." This is why the active handling message can be associated with a bad IAT sensor reading. If the IAT curcuit is open due to a bad connection or faulty sensor, the IAT reading falls to -35 degrees. :chevy
Melting Slicks
Joined: Aug 2001
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From: Wichita KS
Re: Do these three codes indicate a particular problem? (redrodxp)
As added information, on page 5-282 of the 1999 service manual, ....
Thread Starter
Burning Brakes
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From: Troy MI
Re: Do these three codes indicate a particular problem? (runamuk)
The Intake Air Temperature (IAT) sensor is used by the Powertrain Control Module (PCM) as an information source for ignition system functions. The Service Manual has no reference that I can find between the Anti Lock Brake System and the Intake Air Temperature sensor. The System description in the Service Manual for the ABS makes no reference to the IAT.
IF THERE WAS a temperature sensor input to the Electronic Brake Control Module, it would make more sense for it to be from the Ambient Air Temperature sensor - but that is part of the Heating Ventilation and Air Conditioning system.
The ACTIVE HANDLING WARMING UP is NOT a malfunction, it is only a functional check by the EBCM of the active handling system.
:iagree:
I get this message 3 or 4 times a year on my car and I don't believe it has anything to do with the outside air temp, I think it's just telling you the computer needs to "warm" up
IF THERE WAS a temperature sensor input to the Electronic Brake Control Module, it would make more sense for it to be from the Ambient Air Temperature sensor - but that is part of the Heating Ventilation and Air Conditioning system.
The ACTIVE HANDLING WARMING UP is NOT a malfunction, it is only a functional check by the EBCM of the active handling system.
:iagree:
I get this message 3 or 4 times a year on my car and I don't believe it has anything to do with the outside air temp, I think it's just telling you the computer needs to "warm" up
I am going to look into the IAT sensor and harness.
The harness for $20, will that relplace the whole harness from the IAT to the computer?
Resident moron
Joined: Jun 2003
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From: Assachusetts
Re: Do these three codes indicate a particular problem? (msuc5vette)
Just to confirm, low IAT readings (which includes bad IAT, and bad harness) WILL produce 'Active Handling Warming Up' messages. My IAT connector went bad and the car was showing -38F at all times. Almost every time I'd start the car I'd get AH warming up messages. I replaced the connector and I've never seen it again. I also never once saw that message before the IAT problems.
Read this thread for my experience with 1111 and 0113.
http://ls1tech.com/forums/showthread...ighlight=P0113
Dope
Read this thread for my experience with 1111 and 0113.
http://ls1tech.com/forums/showthread...ighlight=P0113
Dope
Thread Starter
Burning Brakes
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From: Troy MI
Re: Do these three codes indicate a particular problem? (Dope)
The dealer I went to couldn't determine what the harness was.
Is the connector just the part that plugs into the IAT?
I bought a new sensor, it was $16, I will try that first, but do you have a part number for the connector?
Is the connector just the part that plugs into the IAT?
I bought a new sensor, it was $16, I will try that first, but do you have a part number for the connector?
Team Owner
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Re: Do these three codes indicate a particular problem? (msuc5vette)
The dealer I went to couldn't determine what the harness was.
Is the connector just the part that plugs into the IAT?
I bought a new sensor, it was $16, I will try that first, but do you have a part number for the connector?
Is the connector just the part that plugs into the IAT?
I bought a new sensor, it was $16, I will try that first, but do you have a part number for the connector?
Robert