Typical Enabling Conditions

Monitor runs whenever following DTCs not present

P0011 (VVT System 1 - Advance) P0012 (VVT System 1 - Retard) P0021 (VVT System 2 - Advance) P0022 (VVT System 2 - Retard)

P0031, P0032, P0051, P0052 (A/F sensor heater - Sensor 1)

P0037, P0038, P0057, P0058 (HO2 sensor Heater - Sensor 2)

P0100 - P0103 (MAF meter)

P0115 - P0118 (ECT sensor)

P0120 - P0223, P2135 (TP sensor)

P0125 (Insufficient ECT for closed loop)

P0136, P0156 (HO2 Sensor - Sensor 2)

P0171, P0172 (Fuel system)

P0300 - P0306 (Misfire)

P0335 (CKP sensor)

P0340 (CMP sensor)

P0351 - P0356 (Ignitor)

P0500 (VSS)

P2196, P2198 (A/F sensor - rationality) P2A00, P2A03 (A/F sensor - slow response)

Battery voltage

11 V or more


-10°C (14°F) or more

Engine coolant temperature sensor

75°C (167°F) or more

Atmospheric pressure coefficient

0.75 or more

Delay time after IDCE ON

Less than 5 seconds

Engine RPM

Less than 3,200 rpm

A/F sensor status


Fuel system status

Closed loop

Delay time after fuel cut

10 seconds or more

Engine load

10 to 70 %

All of the following conditions are met

Condition 1, 2 and 3

1. Mass air flow rate

5 to 70 g/sec

2. Front catalyst temperature (estimated)

650 to 840°C (1,202 to 1,544°F)

3. Rear catalyst temperature (estimated)

100 to 900°C (212 to 1,652°F)

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