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FAULT CODE 196

Coolant Level Sensor 1 Circuit - Voltage Below Normal or Shorted to Low Source

Overview


CODE

REASON

EFFECT

Fault Code: 196

Coolant Level Sensor 1 Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage

None on

PID:

detected at the engine coolant level circuit.

performance.

SPN: 111



FMI: 4/4



LAMP: Amber



SRT:



Coolant Level Sensor 1 Circuit - Industrial Engine


Coolant Level Sensor 1 Circuit - Marine Engines


Coolant Level Sensor 1 Circuit - Power Generation En


Circuit Description

The ECM supplies a 5-volt supply to the engine coolant level sensor using a common sensor supply circuit. The ECM also provides a ground on the sensor return circuit. The coolant level sensor 1 monitors the engine coolant level within the coolant system and passes information to the ECM through the OEM harness and engine harness.


Component Location


The coolant level sensor 1 is typically located in the radiator top tank or surge tank. Refer to the OEM troubleshooting and repair manual for location.


Shop Talk


Some engines are equipped with a 2-wire sensor instead of a 3-wire sensor. The 2-wire sensors do not have the 5-volt supply wire in the circuit. Possible causes of this fault code include:

  • Signal circuit shorted to ground or return in the harness, sensor or connectors

  • An open supply circuit.


Refer to Troubleshooting Fault Code t05-196


Last Modified: 16-Nov-2012

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