Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-P013100

Condition
The Engine control module (ECM) measures the volume of oxygen in the exhaust gases before the three-way catalytic converter (TWC) using a front heated oxygen sensor (HO2S) (bank 1). The control module checks the direct voltage from the sensor.

Note! Engine cylinders are counted starting from the right side of the vehicle, that is, the cylinder farthest from the engine's 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 control module detects that:
- The direct voltage is lower than 1.8 V.
- Incorrect value lasts longer than 5 seconds.
- Incorrect value lasts for 2 or more subsequent driving cycles.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Engine running for at least 2 minutes.

Note! The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.





Substitute value
- None.

Possible source
- Contact resistance and oxidation in the terminals.
- The signal cable is short-circuited to ground.
- Open-circuit in the signal cable.
- Damaged front heated oxygen sensor (bank 1).

Fault symptom[s]
- Malfunction indicator light (MIL), on
- Poor performance