Diesel Data: Automotive Repair

OBD System Description - A/F Sensor Heater and HO2S Heater Monitor

OBD System Description - A/F Sensor Heater and HO2S Heater Monitor

System Description/Monitoring Procedure
For both A/F sensor and HO2S heaters, the system monitors proper current and loaded voltage.

DTC Description/Detecting/Confirmation Procedure

P0031, P0032
Refer to DTC P0031/P0032. P0031

P0037, P0038
Refer to DTC P0037/P0038. P0037

A/F Sensor Heater Monitor

Operation






Enabled conditions






Typical malfunction thresholds







HO2S Heater Monitor

Operation






Enabled conditions






Typical malfunction thresholds






MODE $06 Data