P1781 p0700 - 2003 Saturn ION

ZJ Limited

• 17989 Answers
• Posted on Sep 30, 2011

SOURCE: Check engine light is on. Codes are p1781, p0113

DTC P0113 - Intake Air Temperature Sensor High Voltage
To diag this code you will need a volt/ohm meter. Need to check for 5 volt reference in to sensor from PCM, and ground side of sensor to PCM. Also, check carefully the wires at the sensor. The wires may be broken inside the insulation, right at the connector of the sensor. Pull on each wire slightly and see if it starts stretch. If it does, then the wire is broke inside the insulation, and will need to be repaired.


DTC P0700 - EATX ControllerIs
Is a generic transmission control code. This code lets you know that a specific failure code is stored in the TCM (Transmission Control Module) and needs to be retreived with a diagnostic scanner with TCM reading capabilities. It may or may not be related to the ROM failure in the ECM (Engine Control Module).


DTC P1781 - Engine Torque Signal Circuit
This code is set during engine start up when the ECM and TCM do not communicate properly during initial power up. It will only illuminate the service light if the condition occurs in 2 consecutive start cycles, but the DTC will be stored in the failure records after the first cycle.


Hope this helps.