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Home >> Lexus >> 2007 >> SC 430 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> SFI System >> DTC P0300 Random / Multiple Cylinder Misfire Detected; DTC P0301 Cylinder 1 Misfire Detected; DTC P0302 Cylinder 2 Misfire Detected; DTC P0303 Cylinder 3 Misfire Detected; DTC P0304 Cylinder 4 Misfire Detected; DTC P0305 Cylinder 5 Misfire Detected; DTC P0306 Cylinder 6 Misfire Detected; DTC P0307 Cylinder 7 Misfire Detected; DTC P0308 Cylinder 8 Misfire Detected >> Typical Enabling Conditions

Typical Enabling Conditions

TYPICAL ENABLING CONDITIONS

Monitor will run whenever these DTCs are not present P0100 - P0103 (MAF meter)
P0110 - P0113 (IAT sensor)
P0115 - P0118 (ECT sensor)
P0120 - P0223, P2135 (TP sensor)
P0125 (insufficient ECT for closed loop)
P0327 - P0333 (knock sensor)
P0335 (crankshaft position sensor)
P0500 (VSS)
Battery voltage 8 V or more
VVT system Not operated by scan tool
Engine RPM 400 to 6,300 rpm
All of following conditions 1 and 2 are met -
1. ECT -10°C (14°F) or more
2. Either of following conditions (a) or (b) is met -
(a) Engine start ECT Higher than-7°C (19°F)
(b) ECT Higher than 20°C (68°F)
Fuel cut OFF

Monitor period of emission-related misfire: 

TYPICAL ENABLING CONDITIONS

First 1,000 revolutions after engine start, or Check Mode Crankshaft 1,000 revolutions
Except above Crankshaft 1,000 revolutions x 4

Monitor period of catalyst-damage misfire: 

TYPICAL ENABLING CONDITIONS

All of following conditions 1, 2 and 3 are met Crankshaft 200 revolutions x 3
1. Driving cycles 1st
2. Check Mode OFF
3. RPM Less than 2,800 revolutions
Except above Crankshaft 200 revolutions