Code Enable Criteria

PCM will run diagnostic for this DTC under the following conditions:

• DTCs P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0121, P0122, P0123, P0125, P0440, P0443, P0449, P0452, P0453, P1106, P1107, P1112, P1114, P1115, P1121 or P1122 are not set.
• Ignition voltage is 10-18 volts.
• Barometric pressure is more than 75 kPa.
• Fuel level is 15-80 percent.
• Engine Coolant Temperature (ECT) and Intake Air Temperature (IAT) are 39-86°F (4-30°C).
• Start-up ECT and IAT are within 16°F of each other.
• Vehicle speed is less than 75 MPH.

DTC will set when EVAP system can achieve vacuum, but a vacuum decay is detected during diagnostic test.