Reading DTC codes from VX SS

[73LJWhiteSL]

All,

I've had the check engine light come on briefly a couple of times in the last few days. When this happened 18 months ago I went and brought a Toledo ODB2 scanner, but it could never show codes.

Now when I have connected it, when the check engine light is on it tells me there are no error codes.

Can someone advise what I can use to read the codes please? It appears the $160 I spend on the Toledo OBD2 scanner was a waste of money. I don't mind spending maybe up to $200 on something that will work but I don't want to waste anymore money trying things that do not work.

Ten years ago I took it to Holden to read the codes when the check engine light would not go off and the car was running terrible and it cost me $70 because they wanted to charge me $1000 to replace the knock sensors. I did it myself for less than $500.

Car is 2002 VX SS

Thanks

Steve

 

[lout]

try supercheap to get it scanned
you are looking $600 to $700 for halfway decent scan tool

 

[73LJWhiteSL]

try supercheap to get it scanned
you are looking $600 to $700 for halfway decent scan tool

Thanks heaps Lout, I was able to get that done yesterday.

What I got is:

Engine Control Module
- P0171 - DTC - Fuel System LeanBank1
ABS/ETC
- 58 DTC - Throttle Relaxer PWM InterFace Fault (Pulse Width Modulation)
Instrument
- 19 DTC - [Current] PCM Fault Logger
- 19 DTC - [History] PCM Fault Logger

I haven't found anything on them yet from what I have Googled, has anyone experienced these ones before?

Thanks

 

[mpower]

can't help on codes but for your future endeavours i recommend Envyous Customs cables and SW.

Envyous Customs - GM Programming and Diagnostics

Envyous Customs provides professional diagnostic scantools and programming services to suit all Holden and General Motor vehicles.

www.envyouscustoms.com

 

[lout]

P0171 Chevrolet: Code Meaning, Causes, Symptoms, & Tech Notes (With Video)

The Engine Control Module (ECM) controls a Closed Loop air/fuel metering system to provide the best possible combination of drivability, fuel economy, and

www.engine-codes.com

clear the codes and see what comes back
CEL is usually emissions so deal with your P0171 first

 

[73LJWhiteSL]

http://[URL]https://www.engine-codes.com/p0171_chevrolet.html

[/URL]
clear the codes and see what comes back
CEL is usually emissions so deal with your P0171 first

Thanks Lout, I will check out each of those things. The car runs dual fuel, with a JTG liquid LPG injection system and I have been having the odd misfire off late, it might be due for new plugs again.

 

[lout]

always include the gas system in your original post as it has a huge bearing on the diagnostics
definitely look at better quality spark plugs

 

[mpower]

always include the gas system in your original post as it has a huge bearing on the diagnostics
definitely look at better quality spark plugs

yeah, it's always the gas system, aftermarket ones are a pita and afaik GM-H only ever had aftermarket.