Trouble P1486 means: EVAP Leak Monitor found a pinched hose
Intake Throttle Position Sensor High Voltage
The Jeep 302 cubic inch engine 306 error code is a reference to a malfunctioning PCV valve. Replace your PCV valve and the error code should stop.
There are a few reasons for a Jeep error code 121. Some of the causes are a bad connection with the TPS, a corroded sensor, or a harness is rubbing a harness.
Trouble code P0605 means: Internal TCM Error
TYPE 43 is the dash type its not a error code of any kind
Code 12 just means that the battery has been recently disconnected
Error code 66 on a 1997 Jeep Cherokee means TCM to PCM failure. This code means that the transmission control model is not communicating with the powertrain control model.
Trouble code P0174 means:System too lean (Bank 2)
Trouble code P0302 means:Cylinder 2 misfire detected
Check the computer for error code 11. http://www.jedi.com/obiwan/jeep/dtc.html
Engine speed sensor circuit malfuntion
Trouble code P0601 means: Internal Control Module Memory Check Sum Error