Conditions for Setting the DTC

P0030 or P0036

• The control module detects that the affected HO2S heater low control circuit is not within a specified range.
• DTCs P0030 and P0036 set within 3 seconds when the above condition is met.

P0053 or P0054

• The control module detects that the affected HO2S heater low control circuit is not within a specified range at engine start-up.
• DTCs P0053 and P0054 set within one second when the above condition is met.

P0135 Heater Current Test

• The control module detects that the HO2S 1 heater current parameter is more than 2.5 amps or less than 0.25 amps.
• DTC P0135 sets within 30 seconds during the heater current test when the above condition is met.

P0135 Heater Resistance Test

• The control module detects that the HO2S 1 heater calculated resistance is not within an expected range at engine start-up.
• DTC P0135 sets within 30 seconds during the heater resistance test when the above condition is met.

P0141 Heater Current Test

• The control module detects that the HO2S 2 heater current parameter is more than 2.5 amps or less than 0.25 amp.
• DTC P0141 sets within 30 seconds during the heater current test when the above condition is met.

P0141 Heater Resistance Test

• The control module detects that the HO2S 2 heater calculated resistance is not within an expected range at engine start-up.
• DTC P0141 sets within 5 seconds during the heater resistance test when the above condition is met.