Monitor Description
The ECM continuously monitors its main and sub CPUs. This self-check ensures that the ECM is functioning properly. If outputs from the CPUs are different and deviate from the standards, the ECM will illuminate the MIL and set the DTC immediately.
DTC DETECTION CONDITION
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0606 | When one of following conditions is met: - ECM CPUs malfunction -Heated Oxygen (HO2) transistors built into ECM malfunctions |
Exhaust Gas Leak HO2 sensor ECM |
| P0606 | For Mexico Models: ECM main CPU error |
ECM |
NOTE:
An exhaust gas leak generates noise in the HO2 sensor output. The ECM may interpret this as an HO2 sensor transistor malfunction and set P0606.