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Home >> Lexus >> 2008 >> SC 430 >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (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

WARNING: This page is about a different car, the 2007 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.
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
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