Conditions for Running the DTCs

Conditions 1

• Before the ECM can report DTC P0135 failed, DTCs P0030, P0031, P0032, P0101, P0102, P0103, P0121, P0122, P0123, P0130, P0131, P0132, P0221, P0222, P0223, P0335, P0336, P0338, P167A, P2237, P2243, and P2251 must run and pass.
• The ignition 1 voltage is between 11-18 volts.
• The HO2S is at operating temperature for greater than 50 seconds.
• The time after decel fuel cut-off is greater than 50 seconds.
• The HO2S heater is commanded ON to 100 percent.
• The calculated exhaust temperature is greater than 400°C (752°F).
• The ECM internal sensing element resistance test is enabled.
• DTC P0135 runs continuously once the above conditions are met for 1 minute.

Conditions 2

• Before the ECM can report DTC P0135 failed, DTCs P0030, P0031, P0032, P0101, P0102, P0103, P0121, P0122, P0123, P0130, P0131, P0132, P0221, P0222, P0223, P0335, P0336, P0338, P167A, P2237, P2243, and P2251 must run and pass.
• The ignition 1 voltage is between 11-18 volts.
• The ECT is greater than -10°C (+14°F) at start up.
• The HO2S is at operating temperature.
• The ECM internal sensing element resistance test is enabled.
• The fuel injectors are not disabled.
• If the engine is operating and then the ignition is turned OFF, the engine must be OFF for at least 5 minutes before the next start-up for the diagnostic to run.
• DTC P0135 runs continuously once the above conditions are met for greater than 2 minutes.