LS1 P0171 code issue
Odd you have no fuel trim readings. That's concerning there.
No problem man, best of luck with it.
Btw have you checked the data on the coolant temp sensor reading and intake air temp readings? Coolant temp is a big one when it comes to fueling, usually they read low when they go bad and cause a rich condition but it is worth taking a look at to see if the reading seems correct.
No problem man, best of luck with it.
Btw have you checked the data on the coolant temp sensor reading and intake air temp readings? Coolant temp is a big one when it comes to fueling, usually they read low when they go bad and cause a rich condition but it is worth taking a look at to see if the reading seems correct.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
If it isn't going into closed loop something is wrong, like coolant temp. Can you get a temp reading in the data stream?
Man that sucks. Go through and check all wiring for rubbing or chafing. Check your grounds real good at the body frame and especially the ones on the engine. The usual culprit is the ground break out on the back of the cylinder head on the driver side. Those get loose and cause all sorts of problems.
Unplug and replug the connectors at the PCM too. That helps clean the pins and ensure a good connection.
Go from there.
The p0200 could be from unplugging the injectors. If you still have to code after clearing it carefully check each connector at the injectors and carefully plug them in making sure none are funky.
Man that sucks. Go through and check all wiring for rubbing or chafing. Check your grounds real good at the body frame and especially the ones on the engine. The usual culprit is the ground break out on the back of the cylinder head on the driver side. Those get loose and cause all sorts of problems.
Unplug and replug the connectors at the PCM too. That helps clean the pins and ensure a good connection.
Go from there.
The p0200 could be from unplugging the injectors. If you still have to code after clearing it carefully check each connector at the injectors and carefully plug them in making sure none are funky.
Thread Starter
Teching In
Joined: Aug 2018
Posts: 23
Likes: 1
P0200 code resolved. Found fuel injector electrical connectos bent which prevented connector clip from completing circuit. This injector was not firing. Changed out injector, code gone and now ultrgauge reporting long fuel trims again.
Appreciate everyone's input. Hope this helps someone.
Appreciate everyone's input. Hope this helps someone.
