I bought an LS1 Scanmaster today and found I had codes P0 171, P0 174, and P0 740. My instructions don't say what these are. I think the instructions I got were meant for a GN.

I did some searching and couldn't find a list, can anybody help me out?

Thanks.

 

obdii.com

7__ is a tranny code.

Helm's manuals also have the trouble codes in back with explanations.

I want to add an FAQ with all that info good idea?

 

Thanks John.

Trans code huh...crappola. I just got this trans last spring.

A code list in the FAQ would definitely be a good idea.

EDIT: P0740 is the convertor clutch circuit...probably from my lockup switch.

I have the lean codes 171 and 174 with a 100% stock maf now...I don't get it.

[ December 04, 2001: Message edited by: JimTA ]</p>

 

You can copy this one if you want

P0170 Fuel Trim Malfunction (Bank 1)
P0171 System too Lean (Bank 1)
P0172 System too Rich (Bank 1)
P0173 Fuel Trim Malfunction (Bank 2)
P0174 System too Lean (Bank 2)


P0740 Torque Converter Clutch Circuit Malfuction


http://ls1info.com/article.php?sid=110

[ December 05, 2001: Message edited by: TA_2001 ]</p>

 

Yeah Jim I get PO740 from my lockup switch too!

You have a vacuum leak of some sort? airbox/intake not sealing properly?