Rotated tires-codes u0121 & u0155 show up
#1
Registered User
Thread Starter
Join Date: Feb 2005
Location: Portland Oregon
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
Rotated tires-codes u0121 & u0155 show up
Rotated tires this weekend, next time car is turned on I get these 2 codes from my scangauge2. Cleared them once but they come right back on..what the heck did I do to cause this??
Last edited by Scorpio8; 02-23-2009 at 07:56 PM.
#2
Surf Hard, Drive Hard
Join Date: Feb 2007
Location: Indialantic, Florida
Posts: 7,840
Likes: 0
Received 11 Likes
on
9 Posts
U0121 Communication error to ABS HU/CM
U0155 Communication error to instrument cluster
I'm guessing you have bumped a connector when you rotated the wheels/tires. Go check all corners and see if you can find one that is loose. 2nd code I'm not sure about that one.
Did you plug in the Scanguage before or after the car was started? Sometimes it doesn't like being plugged in afterwards. Just a thought.
U0155 Communication error to instrument cluster
I'm guessing you have bumped a connector when you rotated the wheels/tires. Go check all corners and see if you can find one that is loose. 2nd code I'm not sure about that one.
Did you plug in the Scanguage before or after the car was started? Sometimes it doesn't like being plugged in afterwards. Just a thought.
Last edited by Mazurfer; 02-23-2009 at 09:55 AM.
#3
Registered User
Thread Starter
Join Date: Feb 2005
Location: Portland Oregon
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
Mazurfer, thanks for the reply. The scangauge is always plugged in and hasn't caused any issues so far.
I will check the ABS sensors tonight to see if I disconnected one somehow.
I will check the ABS sensors tonight to see if I disconnected one somehow.
#5
Certified Mazda Tech
U codes are actually module to module communication codes. If those codes are stored in the PCM part of the memory and come right back that means your car is having communication interrupted between the PCM and the ABS module and between the PCM and the I/C. hardest codes to trace back most of the time. ill try to find the graph later, your CEL isnt on tho and no other lights are on either, correct?
kevin.
kevin.
#8
Surf Hard, Drive Hard
Join Date: Feb 2007
Location: Indialantic, Florida
Posts: 7,840
Likes: 0
Received 11 Likes
on
9 Posts
Turn car to on, but don't start. Turn wheel all the way to the right and then all the way to the left.
Shut car off.
Then start it and tell us what is on. Don't forget to not shut it down cold!
Oh......................and when you do start it again, go ahead and clear the codes and then scan it again.
Shut car off.
Then start it and tell us what is on. Don't forget to not shut it down cold!
Oh......................and when you do start it again, go ahead and clear the codes and then scan it again.
#10
Registered User
Thread Starter
Join Date: Feb 2005
Location: Portland Oregon
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
Mazurfer, followed your instructions and it has fixed the CEl. Turning the wheels lock to lock got rid of the traction control light, when I started it, the CEL was still on. Same 2 codes. Cleared them with the Scangauge and drove it...no lights!
Thanks for your help.
Thanks for your help.
Last edited by Scorpio8; 02-23-2009 at 07:58 PM.
#11
Surf Hard, Drive Hard
Join Date: Feb 2007
Location: Indialantic, Florida
Posts: 7,840
Likes: 0
Received 11 Likes
on
9 Posts
Hopefully it will stay that way.
FYI..............not that you did it, but anytime you unhook the battery, you will have to do that TCS/DCS reset.
The codes......who knows.......might have been just one of those things?
FYI..............not that you did it, but anytime you unhook the battery, you will have to do that TCS/DCS reset.
The codes......who knows.......might have been just one of those things?
#12
Certified Mazda Tech
codes normally set when the terminals are yanked, but generally should clear automatically without setting a CEL, and generally when erased they won't reoccur as once the terminals attached their communication is working. may be my unfamiliarity with scangauge or whatnot.
kevin.
kevin.
#13
The Chief
iTrader: (7)
Join Date: Jun 2005
Location: Virginia Beach, VA
Posts: 827
Likes: 0
Received 0 Likes
on
0 Posts
This is weird. The same codes just came up for me after changing my thermostat? I guess I'll see if they comeback. Maybe the Scangauge doesn't like to be connected when the battery is disconnected and reconnected?
#14
Certified Mazda Tech
kevin.
#17
I have a similar problem to and i could really use everyone's help.
Not to long ago i had my rx8 checked by autozone because my engine light turned on and well these are the 2 codes i got from the diagnostics P0302 and U0155. The P0302 indicates that cylinder 2 had detected a misfire of excess emissions level. As for U0155 it states that it lost communication with instrument panel cluster (IPC) control module. Whats is the problem, what does it mean im in drier need of help. I dont want to damage my car my baby anymore than it already is.
#18
I have read a lot of posts, but have not seen one that resembles my situation. While driving my ABS, Brake and Stearing light illuminate. Along with this the speedometer reads 0 (zero) and the steering is tight. I have disconnected the battery and made sure the posts are clean. I have completed all reset functions listed in numerous posts. The one thing that seems to clear the lights is while in park, revving the engine above 3k for a couple of seconds. Although, this is temporary. Had the codes read and listed U0121, lost comm with ABS system. Any thoughts?
#19
Registered
iTrader: (1)
I have read a lot of posts, but have not seen one that resembles my situation. While driving my ABS, Brake and Stearing light illuminate. Along with this the speedometer reads 0 (zero) and the steering is tight. I have disconnected the battery and made sure the posts are clean. I have completed all reset functions listed in numerous posts. The one thing that seems to clear the lights is while in park, revving the engine above 3k for a couple of seconds. Although, this is temporary. Had the codes read and listed U0121, lost comm with ABS system. Any thoughts?
#20
I have read a lot of posts, but have not seen one that resembles my situation. While driving my ABS, Brake and Stearing light illuminate. Along with this the speedometer reads 0 (zero) and the steering is tight. I have disconnected the battery and made sure the posts are clean. I have completed all reset functions listed in numerous posts. The one thing that seems to clear the lights is while in park, revving the engine above 3k for a couple of seconds. Although, this is temporary. Had the codes read and listed U0121, lost comm with ABS system. Any thoughts?
#22
Thanks for your reply. Are you suggesting that the scanner i used is causing the ABS and power steering problem? Actually both my cars are using OBDII gauge to display water temperature, and can also scan and clear codes. I kind of suspected the same, but the problem remained even with the gauge disconnected. I also tried using Torque with bluetooth obd2 scanner, and it returned the same code. Could the OBD2 gauge has caused permanent damage to my ABS and power steering control module?
#23
Hello, I have 2 RX8 and both have the same problem. Did you managed to fix it? Tried changing the alternator but not helping.
The following users liked this post:
omarbadar (09-07-2019)