Conditions For Setting The DTC

Rich Test

• The ECM detects that the HO2S 2 voltage parameter is more than 1,065 mV.
• DTC P0138 sets during the rich test within 100 seconds when the above condition is met.

Decel Fuel Cutoff Test

• The ECM detects that the HO2S 2 voltage parameter is more than 587 mV.
• DTC P0138 sets during the decel fuel cutoff test within 10 seconds when the above condition is met.