Southern California Southern California

Code Help!!!!!!!!!

Thread Tools
 
Search this Thread
 
Old Nov 6, 2005 | 01:53 PM
  #1  
CN RED's Avatar
CN RED
Thread Starter
Pro
 
Joined: Nov 2003
Posts: 594
Likes: 0
From: Los Angeles Ca
Default Code Help!!!!!!!!!

A friend went to go get his car SMOG Checked and he's throwing this code. Could someone please help with this code and what it means.

Here's the CODE P0343

Thanks in advance.

CN RED
Reply
Old Nov 6, 2005 | 02:38 PM
  #2  
EPiC Vette's Avatar
EPiC Vette
Drifting
 
Joined: Aug 2004
Posts: 1,448
Likes: 1
From: Tracy CA
Default

Model? Year? Tranny? Mods?
Reply
Old Nov 6, 2005 | 04:05 PM
  #3  
CN RED's Avatar
CN RED
Thread Starter
Pro
 
Joined: Nov 2003
Posts: 594
Likes: 0
From: Los Angeles Ca
Default

99 is the year, Auto tranny, no mods

CN RED
Reply
Old Nov 6, 2005 | 05:42 PM
  #4  
jmzvet's Avatar
jmzvet
Safety Car
20 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Sep 2002
Posts: 4,161
Likes: 12
From: San Diego CA
Default

P0343 CMP Sensor Circuit High Voltage No idea what it means though.

Code list:
http://www.stengel.net/diccodes.htm
Reply
Old Nov 6, 2005 | 06:44 PM
  #5  
SNAKEKILLER!'s Avatar
SNAKEKILLER!
Burning Brakes
 
Joined: Feb 2004
Posts: 1,136
Likes: 0
From: San Jose Ca
Default High voltage....

Originally Posted by CN RED
A friend went to go get his car SMOG Checked and he's throwing this code. Could someone please help with this code and what it means.

Here's the CODE P0343

Thanks in advance.

CN RED
Check the current in you're altenator.....also check the voltage on you're battery...
Reply
Old Nov 7, 2005 | 10:50 PM
  #6  
mdkenz06's Avatar
mdkenz06
Cruising
20 Year Member
 
Joined: Sep 2002
Posts: 11
Likes: 1
From: Madeira Beach Florida
Default Setting P0343

Originally Posted by SNAKEKILLER!
Check the current in you're altenator.....also check the voltage on you're battery...
I'm setting the same code in an '02 Z06 w/ ATI procharger (original kit), headers, random tech x-pipe & cats, borla stingers. I have occasionally had the message Charging system failure occur when starting. I've noticed that my voltage while running is about 13.8-14.2. I've seen it drop lower as well while running along at 2500 rpm. Using EFILive I can see that the low to high and high to low transition counters increment and match so I was looking for another explanation. After reading some threads it looks like the new alternators are 140amp vs. 110. Does it sound like I should give that a try based off of the symptoms?

Thanks,
Ken
Reply

Get notified of new replies

To Code Help!!!!!!!!!





All times are GMT -4. The time now is 05:26 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