Model#: SHENST05

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Sheffield Research ST05 Oxygen Sensor Tester and Simulator

  • Sheffield Research ST05 Oxygen Sensor Tester and Simulator
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The ST05 provides a simple interface for test and diagnostic on any Oxygen Sensor, to quickly determine whether the sensor is defective and needs replacement. It is designed as both a stand-alone tool or as a complement to any scanner during the diagnostic process, and is compatible with all types of Oxygen sensors.
The ST05 is simple to set-up and use, and provides the means for fast and accurate testing, showing the sensor's output signal in real time in a bar graph, which allows to diagnose "Lazy" sensors which may not trigger DTC's but cause drivability problems. It also display cross counts on an alphanumeric, can simulates rich and lean conditions, and has a test mode to test the sensor's response time giving a Pass or Fail indication on a large display.
  • Sensor signal output is shown in real time on the bar graph
  • 2 digit alphanumeric display shows the sensor output cross count per second
  • 'Test' button allows the testing of the response time of the sensor and shows a pass or fail result within seconds
  • Two buttons allows for simulation of rich or lean conditions to monitor response of the engine control module
  • Automatically detects common wire misconnections like ground, heater wires, disconnected test leads, reversed polarity etc. and displays these on the alphanumeric display
  • Only requires the connection of two probe clips to the oxygen sensor wires, and the selection of the oxygen sensor type
  • Sensor can be tested on or off the vehicle
  • Diagnoses "lazy" (slow response) sensors, which may not set DTCs, but cause drivability problems
  • Ruggedized electronics make it almost impossible to damage the instrument, even if wrongly connected
  • No software to upgrade
  • Oxygen Sensor Tester and Simulator
  • (2) Clips with 6 ft. Cables
  • Protective Rubber Holster
  • Polypropylene Carrying Case
  • 9V Alkaline Battery
  • User's Manual


Cordless: Yes
Batteries Included: 1
Battery Type: Alkaline
Input Protection: +/- 48V DC
Input Range: 0 - 5V
Voltage: 9V



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