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Advice on trouble codes (DTC)

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Old Nov 25, 2023 | 08:19 PM
  #1  
nburkitt's Avatar
nburkitt
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From: San Jose, CA
Default Advice on trouble codes (DTC)

Hi Guys.

I'm looking to buy a used Z06 from a dealer on the other coast from me. I had LemonSquad inspect the car, and they reported reading some trouble codes. I lack the experience to know how to interpret what they found. If anyone does have some experience with these kinds of issues, your help would be appreciated.

Thanks,

-Nick

This is the one that concerns me the most:

B2745:02 - Traction control switch circuit short to ground
DTC history status : History
Since DTC clear : Passed and failed
Last test : Passed
This ignition cycle : Passed
MIL status : Not requested

I'm pretty sure this is just a key fob battery issue:

B3110:00 - Keyless entry transmitter 2 battery
DTC history status : History
Since DTC clear : Passed and failed
Last test : Passed
This ignition cycle : Passed and failed
MIL status : Not requested

This one was further diagnosed as a blend door actuator failure, and is being fixed by the dealer:

B374A:61 Air flow control feedback circuit stuck
DTC history status : History
DTC current status : Current

The rest all show as "not current," which I don't really know how to interpret. Could these really be transient issues, maybe caused by a low battery, or jump start, or ...?

B1325:03 - Control module power circuit low voltage
DTC history status : History
DTC current status : Not current

B3124:05 - Keyless entry antenna 6 high voltage/open
DTC history status : History
DTC current status : Not current

B1325:07 - Control module power circuit high voltage
DTC history status : History
DTC current status : Not current
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Old Nov 28, 2023 | 10:50 PM
  #2  
Bill Dearborn's Avatar
Bill Dearborn
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From: Charlotte, NC (formerly Endicott, NY)
Default

Originally Posted by nburkitt
Hi Guys.

I'm looking to buy a used Z06 from a dealer on the other coast from me. I had LemonSquad inspect the car, and they reported reading some trouble codes. I lack the experience to know how to interpret what they found. If anyone does have some experience with these kinds of issues, your help would be appreciated.

Thanks,

-Nick

This is the one that concerns me the most:

B2745:02 - Traction control switch circuit short to ground
DTC history status : History
Since DTC clear : Passed and failed
Last test : Passed
This ignition cycle : Passed
MIL status : Not requested

I'm pretty sure this is just a key fob battery issue:

B3110:00 - Keyless entry transmitter 2 battery
DTC history status : History
Since DTC clear : Passed and failed
Last test : Passed
This ignition cycle : Passed and failed
MIL status : Not requested

This one was further diagnosed as a blend door actuator failure, and is being fixed by the dealer:

B374A:61 Air flow control feedback circuit stuck
DTC history status : History
DTC current status : Current

The rest all show as "not current," which I don't really know how to interpret. Could these really be transient issues, maybe caused by a low battery, or jump start, or ...?

B1325:03 - Control module power circuit low voltage
DTC history status : History
DTC current status : Not current

B3124:05 - Keyless entry antenna 6 high voltage/open
DTC history status : History
DTC current status : Not current

B1325:07 - Control module power circuit high voltage
DTC history status : History
DTC current status : Not current
I suspect the last 3 are either due to a low battery and were fixed by either charging or replacing it.

The key fob issue could very well be a key fob battery that needs to be replaced.

The traction control switch (**** on the console) issue could also be due to a low car battery. The last test indicates it isn't failing anymore and if it isn't broken it is hard to fix. Whatever the dealer did to correct the other three failures probably resolved this one as well. The BCM monitors the traction control switch positions and if its supply voltage is on the low side that could lead to BCM read errors.

Bill
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Old Nov 29, 2023 | 12:33 PM
  #3  
nburkitt's Avatar
nburkitt
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Joined: Mar 2019
Posts: 44
Likes: 12
From: San Jose, CA
Default

Thanks - the dealer gave a similar opinion, but then they would. I've never dealt with OBD diagnostic codes, so I have no feel for how often spurious trouble codes get reported, or for how long they're retained.

-Nick
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