Permanent code???
Thread Starter
Safety Car
Joined: Sep 2005
Posts: 4,221
Likes: 643
From: Orange County Ca
Permanent code???
'09 base convertible, 55k miles.
I got gas a few days ago, and on the way home, the check engine light came on. Thinking that the only thing that changed recently was getting gas, I pulled over and checked to see that the cap was on tightly. The cap was shot. It went in and clicked when twisted, but didn't actually cam in, it just sat on top of filler tube. So, off to O'Reiley's to get a Stant replacement ($20) and on home. Light still on, so I tried my old obd2 scanning tool and it didn't work at all. So, knowing I was driving from Orange County to San Diego the next day, I disconnected the battery for a short time. I figured that the computer would reset all the codes and markers as I drove the car about 200 miles round trip.
While in San Diego, after about 100 miles and no check engine light coming on, I mentioned it to my son in law, and he suggested we hook up his new Innova 6100P scanner to check it out.
Wow, 3 codes. The car runs great. It was smog tested about 6 mos. ago and passed with no problems.
Codes
P0455 Permanent
C0571-71 system disabled, Information stored, invaled data
U1301 Class 2 Data link high voltage
About 1/2 of the markers had been reset, and he could not delete the codes.
What gives?? Permanent code??
I got gas a few days ago, and on the way home, the check engine light came on. Thinking that the only thing that changed recently was getting gas, I pulled over and checked to see that the cap was on tightly. The cap was shot. It went in and clicked when twisted, but didn't actually cam in, it just sat on top of filler tube. So, off to O'Reiley's to get a Stant replacement ($20) and on home. Light still on, so I tried my old obd2 scanning tool and it didn't work at all. So, knowing I was driving from Orange County to San Diego the next day, I disconnected the battery for a short time. I figured that the computer would reset all the codes and markers as I drove the car about 200 miles round trip.
While in San Diego, after about 100 miles and no check engine light coming on, I mentioned it to my son in law, and he suggested we hook up his new Innova 6100P scanner to check it out.
Wow, 3 codes. The car runs great. It was smog tested about 6 mos. ago and passed with no problems.
Codes
P0455 Permanent
C0571-71 system disabled, Information stored, invaled data
U1301 Class 2 Data link high voltage
About 1/2 of the markers had been reset, and he could not delete the codes.
What gives?? Permanent code??
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,551
Likes: 4,024
From: Cape Coral, Florida
PDTC (Permanent DTC’s) are fairly new and are stored in Mode 10 on a scan tool…these DTC’s can’t be cleared by disconnecting the battery or with a scan tool…your “Large Leak Detcted” will not clear until the issue is fixed and that applicable EVAP Monitor has to run and the code should clear.
Thread Starter
Safety Car
Joined: Sep 2005
Posts: 4,221
Likes: 643
From: Orange County Ca
PDTC (Permanent DTC’s) are fairly new and are stored in Mode 10 on a scan tool…these DTC’s can’t be cleared by disconnecting the battery or with a scan tool…your “Large Leak Detcted” will not clear until the issue is fixed and that applicable EVAP Monitor has to run and the code should clear.
Any idea on the other 2 codes? Are they related to this also?
Thanks in advance.
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,551
Likes: 4,024
From: Cape Coral, Florida
Don’t know about the “C” code but the U1301 is a communication code…1301 is the class 2 serial data line is shorted to power or ground for a few seconds….the Class 2 data line has modules like the HUD, Door Modules, IPC and maybe some other modules…sometimes a low battery can set these communication codes…no relationship to the EVAP code !!
