DTC Description
The downstream heated oxygen sensor (HO2S) is forced rich and lean and monitored by the ECM. This DTC sets when the ECM does not detect the output of the HO2S in a calibrated amount of time.
The downstream heated oxygen sensor (HO2S) is forced rich and lean and monitored by the ECM. This DTC sets when the ECM does not detect the output of the HO2S in a calibrated amount of time.