Codes P0100, P0110 and P0120; help appreciated!

[Mf Baker]

So literally the day I listed my truck last week the cruise control stopped working.

I was trying to figure it out today, checking fuses and such, couldn't find anything. So even though there was no CEL on, I decided to check for codes with my phone since i know sometimes it has possible faults.

Well, to my dismay 3 grey faults turned up! P0100, P0110 amd P0120!!! Yikes!

Again, there has been no CEL light on, truck seems to run fine. From what I've found the multi sensor thing may be pointing to a maf sensor and or tps. What are the chances of both going out?

Any ideas? Could this be related to the cruise not working since it may be a tps???

I don't wanna throw parts at it for no reason, yet it is for sale amd want to.figure it it if possible. Should I try cleaning the maf and running a new drive cycle and see if that fixes it?


Any input very appreciated all! Thanks a ton!

 

[Charlee78]

Hi, I've checked the systems related to your problems and they have one thing in common and that is the ground the ecu uses. It's a withe/black wire that goes directly in the ecu and it should have continuity to any body ground. that's where I would start...
If all your grounds are good, it's most likely that you have a faulty ecu. As for the cruise control, it might be affectd if the ecu dosen't see the tps voltage or it might just be a "fail safe" I'm not sure if the had it back in those days.

How do we add a pdf here?

 

[BlackCat914]

So literally the day I listed my truck last week the cruise control stopped working.

I was trying to figure it out today, checking fuses and such, couldn't find anything. So even though there was no CEL on, I decided to check for codes with my phone since i know sometimes it has possible faults.

Well, to my dismay 3 grey faults turned up! P0100, P0110 amd P0120!!! Yikes!

Again, there has been no CEL light on, truck seems to run fine. From what I've found the multi sensor thing may be pointing to a maf sensor and or tps. What are the chances of both going out?

Any ideas? Could this be related to the cruise not working since it may be a tps???

I don't wanna throw parts at it for no reason, yet it is for sale amd want to.figure it it if possible. Should I try cleaning the maf and running a new drive cycle and see if that fixes it?


Any input very appreciated all! Thanks a ton!

Generally cruise control is disabled if the vehicle has trouble codes stored. Fixing the codes will more than likely get your cruise back.

 

[8sm]

Whats up Baker,

Codes


PO100 Mass or volume air flow circuit

Trouble Areas**********
Open or short in MAF meter circuit, MAF meter, ECM

PO110 Intake Air Temperature Circuit
[intake air temperature sensor]


Trouble Areas ************
Open or short in IAT sensor circuit
IAT sensor ( buit into MAF meter) or ECM


PO120 Throttle/Pedal Position Sensor/ Switch "A" Circuit
[Throttle Position Sensor ( Sensor 1) ]

Trouble Areas ************

Throttle Position (TP) sensor ( built into throttle body) or ECM


This is what Toyota Diagnostics indicates in their system

GLWS............Regards 8sm

 

[Link817]

I know this is an old post, but what success did you have fixing this issue with these three codes? I just had them all come up on me.

 

[the great him]

so i just had these same codes populate today. associated with a super hard start -gave the feeling of being flooded. would just crank and crank, and occasionally acting like it wanted to start only for a second. i have good fuel flow and pressure at the rail(s), and brand new plugs, along with new denso coil packs less than 3 months ago. when it runs it typically runs ok, however occasionally i will get a hesitation under acceleration and a cutting out under load and WOT. fuel economy seams to come and go. yesterday i cleaned the MAfS with MAfS cleaner because i noticed one of the wires was a little fouled -almost looked burnt. anyhow i got it cleaner than it was, but it still did not look as good as the other wire. ran fine yesterday with zero issues but this afternoon my hard start was back -yes this is a different hard start than my fuel pump, its manifesting differently.

it will start just fine after sitting all night or all day after work, but if it had run and warms up, and then shuts down, and stays off for more than 5 min it becomes almost impossible to start. i have been really leaning on the MAfS being the culprit but now i seam to have found the issue. would anyone care to shed some light here and help me confirm this? after all it does have 300k on it.

 

[ryanrmurray02]

Cel

P0100 P0110 and P0505 came on today. Any ideas on what it might be? I'm thinking MAF sensor.