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Mechanical Gas Fuel System G5.9, G8.3 – FAULT CODE 752

Heated Oxygen Sensor Error – Data Intermittent or Incorrect


Overview

Heated Oxygen Sensor Error – Data Intermittent or Incorrect

CODE REASON EFFECT
Fault Code: 752
PID: S065
SPN: 724
FMI: 2
LAMP: Warning
SRT: 

Heated Oxygen Sensor Error – Data Intermittent or Incorrect.

Possible reduced performance.
Heated Oxygen Sensor Circuit
SMALL | MEDIUM | LARGE

Circuit Description

The heated oxygen sensor is used by the ECM to measure the air to fuel ratio at which the engine is operating.

Component Location

The heated oxygen sensor is located in the turbocharger exhaust outlet.

Shop Talk

  • Any grease in the electrical connectors can cause the sensor to fail.
  • Only use Cummins Inc. approved anti-seize and lubricating compound on the sensor mounting threads.
  • Reference air flows through the heated oxygen sensor wires – the engine will not perform well if the supply of air is obstructed.

Refer to Troubleshooting Fault Code t05-752

Last Modified:  15-Jul-2010
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