GUARD GP-FUEL TANK 2501139 - Caterpillar

Which Generate This Code:The Electronic Control Module (ECM) detects the following conditions:
The signal voltage from the intake manifold air temperature sensor is less than 0.2 Volts DC for more than eight seconds.
The ECM has been powered for at least two seconds.
Diagnostic code 0168-01 is not active.System Response:If equipped, the diagnostic lamp will flash. The ECM will log the diagnostic code.The ECM will use the default value of 70 °C (158°F) for the intake manifold air temperature. "Voltage Low" will be displayed next to the status for "Intake Manifold Air Temperature" on the electronic service tool.
Poor stability
Poor cold running
White smoke
Black smoke
Poor acceleration under loadThis fault can be caused by a sensor that is shorted to ground or a sensor that is internally shorted.Test Step 1. Perform the following diagnostic procedure: Engine Temperature Sensor Open or Short Circuit - TestResults:
OK - STOP