5thGenRams Forums

Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!

P0107 MAP Sensor Low Voltage HELP! AlphaOBD wont erase DTC

AustralianFreeRider

New Member
Joined
Jan 17, 2024
Messages
2
Reaction score
0
Points
1
Age
41
Hi all - need some desperate help please!

My 2020 RAM Rebel 1500 5.7 HEMI non Etorque is throwing P0107 Manifold Absolute Pressure and my nearest dealer is 3hrs drive away - the truck isnt running correctly (sluggish throttle - almost like its in limp)
I've tried the following all to no resolution.
  • Replaced MAP sensor
  • Tested Battery and swapped with another - no effect
  • Replaced air cleaner
  • MAP connector has 4.95 Volts with ignition on
  • No visible Vaccum Leaks
Also getting Service Electronic Throttle Control and Service Electronic Stability Control Dash warnings as well as CEL and lighting bolt.

I have a SGW Bypass and have tried to clear the code with AlpahOBD but it just won't clear - I've attached the Log from AlpahOBD.
I have verified my bypass works by making other changes in Alpha so unsure why it wont clear the DTC, I was under the impression I could clear every code and it would come back if the issue is not resolved however this one comes on with ignition and just cant be cleared?

Has anyone seen anything similar that could offer any insight - im literally at the end of my rope!
 

Attachments

  • AlphaOBD.JPG
    AlphaOBD.JPG
    41.9 KB · Views: 11
What mods have you done? Larger tires? Pedal Monster? Mufflers? Tuners? Obviously a SGW Bypass. Make a list of all the mods, that's a good starting point. Then try removing the SGW bypass and the mods.

Check for moisture in the tail lights. At some point you may have to check all the pins on the PCM.
 
Thanks All, do you think a faulty/failed Air Temperature sensor would cause a Low voltage MAP sensor DTC?
 
It happens to the Cummins guys. Don't see why it wouldn't apply to us. It's a $13 part.
 

Users who are viewing this thread

Back
Top