Notices
C5 General General C5 Corvette and C5 Z06 Discussion not covered in Tech

Help! Dead Z06: Code B2723 - PASS-Key Detection Circuit

Thread Tools
 
Search this Thread
 
Old Sep 27, 2006 | 07:36 AM
  #1  
Glennm27's Avatar
Glennm27
Thread Starter
Race Director
Supporting Lifetime
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2002
Posts: 19,557
Likes: 1,470
From: I love you & miss you Linda
2017 C7 of the Year Finalist
St. Jude Contributor
Default Help! Dead Z06: Code B2723 - PASS-Key Detection Circuit

Has anyone had this happen???
A bunch of us here had our Corvettes at a small gathering Tuesday evening and when it was all over, one of the C5's, a 2003 Z06 was dead.
The car will not start. It has a good battery. We thought that was the culprit since it had it's OEM AC in, so we quickly ran to the AutoZone and got him a Red Top.......... Still no go.

So we read the codes and get: B2723 - PASS-Key Detection Circuit
OK, so I am thinking bad key... We drive him home, get another key for the car. Still NO GO.

Apparently the key can not be read somewhere in the car, I imagine the ignition switch is not reading the chip in the key.
We call a towing service and tell them they must send A) a flat bed and B) a good driver. Well we got one, a nice flat bed...

To add to this problem, the front wheels are slightly cocked so the car wants to turn slightly left as you roll it. The column is locked and the car will no start. With the wheels locked and the car wanting to turn left, the driver said he couldn't do it. Not very imaginative or preparred for the job I said. Anyway he left, the car this morning is still right where it happened last night and we will try again to get it to the dealer.
ALSO, it is NOT the dreaded SERVICE COLUMN LOCK problem. That I know......

Has anyone had this problem and know a way out. Or can you tell us what had to be done to fix the problem>

Thanks in advance fo rany help you guys can supply.

Glenn
Reply
Old Sep 27, 2006 | 07:47 AM
  #2  
Rick@Moroso Performance's Avatar
0Rick@Moroso Performance
Former Vendor
 
Joined: Oct 2001
Posts: 378
Likes: 0
From: Moroso Performance, Guilford, CT, 203-453-6571
Default

I had that problem. Exact same symtoms. It turned out it was the ignition switch. Like your thinking, the part that reads the resistor in the key wore out. The new switch fixed it and it has never happened again. Hope this helps!

Rick
Reply
Old Sep 27, 2006 | 08:59 AM
  #3  
Glennm27's Avatar
Glennm27
Thread Starter
Race Director
Supporting Lifetime
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2002
Posts: 19,557
Likes: 1,470
From: I love you & miss you Linda
2017 C7 of the Year Finalist
St. Jude Contributor
Default

Thanks Rick. Appreciate your reply.

We finally got a flatbed guy this morning with some brains and have gotten the car to our trusted GM Tech.
Reply

Get notified of new replies

To Help! Dead Z06: Code B2723 - PASS-Key Detection Circuit





All times are GMT -4. The time now is 02:04 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE