Thrown Codes... Suggestions? (1 Viewer)

[dud122]

Hey guys I'm new here and was wondering if I could get some help...

I just hooked up a scan gauge to my truck and got a few codes...

I know I need a new air/fuel sensor so the p1135 is no surprise.
(could this be causing the other codes??)

p0110 IAT Sensor Circuit (can't find anything on this one)

and

p0100 MAF Circuit Malfunction
found this-
Possible Causes:


MAF Sensor circuit open or shorted
Intake air leaks (unmetered air after MAF Sensor)
Defective MAF Sensor
Electronic Control Module (ECM)/Powertrian Control Module (PCM) concern

Diagnostic Help:


Monitor MAF Sensor voltage reading while increasing engine RPM. The MAF Sensor value should increase in proportion to engine speed. If not, first check for air leaks at intake tube, manifold and all vacuum lines. Then test the MAF Sensor circuits for opens and shorts. See our article Automotive Circuit Testing 101, if you need more assistance with this. If concern is determined to be intermittent, wiggle test connectors and wiring to attempt to duplicate concern. You may also use the "Get Help" link if you need specifications or have any other related questions. Remember to refer to an appropriate manual for specific instruction.




Any help would be greatly appreciated or sharing of past experiences.

 

[LukeZero]

How about filling us in with the model of vehicle you're talking about? It's kind of difficult to know how to help without knowing the model, engine and maybe even the transmission you have.


Pssst.... there is a link about 3 posts up to the Factory Service Manuals for most late model Toyota trucks, you might find your answer there.

 

[dud122]

sorry about that...

I have a 2002 Double Cab 3.4L V6 auto 86,000 miles

 

[raydouble]

How do you know you need an A/F meter? (1st oxy sensor)

 

[dud122]

originally the A/F sensor code was the only one throwing the CEL. i had that diagnosed at my local garage and ordered my new sensor. that was over 3 weeks ago (issues with UPS). my CEL has been on this whole time and i was with a friend with a scan gauge so we hooked it up to see if there were any new codes and there were 2 more.

 

[LukeZero]

I'd change the O2 sensor- clear the codes and then run it awhile. I'm think the other two codes are because the O2 sensor is failing[failed].

 

[raydouble]

I'd change the O2 sensor- clear the codes and then run it awhile. I'm think the other two codes are because the O2 sensor is failing[failed].

x2
Hopefully your shop knows what the hell they are talking about.

 

[dud122]

is a scan gauge the only way to clear a code? could i just unhook the battery for a couple minutes?

 

[raydouble]

You should be able to pull the EFI fuse for between 10-20 seconds and it will clear them.