Diagnostic Trouble Code (DTC) Information

ECM-P015300 Heated Oxygen Sensor (HO2S) Slow Response (Bank 2, Sensor 1)


Condition







Engine Control Module (ECM) checks the front heated oxygen sensor's signal (bank 2).

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 (DTC) is stored if the engine control module (ECM) registers that the heated oxygen sensor (HO2S) is not activated or is activated too slowly.

The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute Value
- Nothing.

Possible Source
- Contact resistance in the terminals
- Damaged front heated oxygen sensor (HO2S).

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