General Maintenance & Repairs Leaks | Squeaks | Clunks | Rattles | Grinds
Sponsored by:
Sponsored by: CARiD

P0300 and P1689 - help

Thread Tools
 
Search this Thread
 
Old Aug 26, 2019 | 08:10 AM
  #1  
bleepster's Avatar
Thread Starter
TECH Resident
10 Year Member
Shutterbug
Liked
Loved
Community Favorite
iTrader: (2)
 
Joined: Jun 2014
Posts: 763
Likes: 53
From: Mid-Michigan
Exclamation P0300 and P1689 - help

2002 Firebird - 3800
Flashing CEL last Thursday on highway as wife entered the highway. she pulled over - shut off the car. she restarted it - no CEL. I told her to drive it "gingerly" home. she did with no issues and no light.

Pulled coades and had the following:
P0300 - random multiple misfire (i have new plugs, havent had time to put them in, and new coil packs) I think this will fix that code, will also clean MAF
P1689 - Traction Control Delivered Torque Output Circuit -
Cause:
  • Poor connection at the PCM. Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection.
  • Damaged harness. Insp

I think the P1689 was a fluke because of the P0300 - would you agree? If not - where is this connector located?

i wont have time to replace plugs and coil packs until another week. so I am hoping to gather as much info on these issues as I can.

I drove it Saturday - no CEL but when I would get heavy on the throttle, it spat and sputtered out the exhaust, so I backed off. Had I continued - I bet the flashing CEL would have came back.

2 of the three coil packs are original - one has been replaced (before I bought the car 5 years ago)

the plugs and wires are newer - 3 years.

thoughts and help appreciated.
Reply
Old Aug 28, 2019 | 07:11 AM
  #2  
wssix99's Avatar
Save the manuals!
15 Year Member
iTrader: (5)
 
Joined: Dec 2007
Posts: 12,967
Likes: 389
From: Chicago, IL
Default

Do you know if both codes occurred at the exact same time? If so, I would look for potential shorts in the harness going to the PCM. If they occurred at different times, then I'd wipe them, put your plugs in, monitor the situation, and then address the issues individually.
Reply
Old Aug 28, 2019 | 08:16 AM
  #3  
bleepster's Avatar
Thread Starter
TECH Resident
10 Year Member
Shutterbug
Liked
Loved
Community Favorite
iTrader: (2)
 
Joined: Jun 2014
Posts: 763
Likes: 53
From: Mid-Michigan
Default

I assume both codes happened at the same time. I never had issues prior. at least no CEL. I will replace the plugs and go from there. i wont reply for another week as I will be out of town. thanks for the help thus far
Reply




All times are GMT -5. The time now is 09:00 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE