Diagnostic Trouble Code (DTC) Information

ECM-P003100 Heated Oxygen Sensor (HO2S) Control Circuit Low (Bank 1, Sensor 1)


Condition







The diagnostic trouble code (DTC) is stored if the Engine Control Module (ECM) registers that the front heated oxygen sensor (HO2S) preheating circuit (bank 1)has a short-circuit to ground, or if there is an open-circuit.

The engine cylinders are counted from the cylinder furthest away from the flywheel.
- Bank 1 (cylinder row nearest the front): cylinders 1, 3, 5 and 7.
- Bank 2 (cylinder row furthest to the rear, nearest the passenger compartment): cylinders 2, 4, 6 and 8.

The diagnostic trouble code can be diagnosed when the ignition is on.

Substitute Value
- Fuel trim switched off.
- Front heated oxygen sensor (HO2S) preheating switched off.

Possible Source
- Open-circuit in the power supply cable.
- Short-circuit to ground in the power cable.
- Damaged front heated oxygen sensor (HO2S).

Fault Symptom[s]
- Malfunction indicator lamp (MIL) lit.