Got code 122....TPS below min voltage
- Thread starter Methodical
- Start date
Stanger007
Founding Member
Yes indeedy - I would guess it will have an incorrect transition from idle to cruise. The TPS will zero itself down to 0.48v. Anything lower and a code is thrown.
Say your TPS is actually at 0.30v. The lowest the PCM can go is 0.48v, so it will not read that the throttle is depressed until you are pressing the pedal enough to get to 0.48v.
I'd backprobe the sensor with a volt meter to verify what it is reading and replace if necessary.
Wes
Say your TPS is actually at 0.30v. The lowest the PCM can go is 0.48v, so it will not read that the throttle is depressed until you are pressing the pedal enough to get to 0.48v.
I'd backprobe the sensor with a volt meter to verify what it is reading and replace if necessary.
Wes
This is strange. I just check the TPS voltage - KOEO - and it was at .96v and goes up to 4.7v when opening the throttle blade. So why am I getting the 122 code? 
Strange.
Strange.
Blackened302
Active Member
Stanger007
Founding Member
Check down the wires starting at the TPS connector to make sure nothing is shorting out. Did the voltage move up smoothly as you rotated the wiper?
After you do that, I like what Punisher said, clear the codes and see if it comes back again.
Wes
After you do that, I like what Punisher said, clear the codes and see if it comes back again.
Wes
Yeah I thought about resetting the computert o see if it comes back or not. I think I will try that.
I cleared the code with the scanner once and it came back but I did not reset the computer though.
I cleared the code with the scanner once and it came back but I did not reset the computer though.
