Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-24A0

Condition
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the front heated oxygen sensors (HO2S) (bank 1 and bank 2) have been switched. This means they are installed in the incorrect bank of cylinders.
The diagnostic trouble codes (DTCs) are diagnosed when the engine has been idling for 10 minutes

Substitute value
- The heated oxygen sensor (HO2S) control is disabled
- Three-way catalytic converter (TWC) diagnostics are disabled.

Possible source
- The front heated oxygen sensors (HO2S) are mounted in the incorrect cylinder banks
- Leakage in the fuel injection system
- Both the front heated oxygen sensors (HO2S) are damaged.

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