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Home >> Lexus >> 2008 >> LS 600hL >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - DTC P0120 - P0453 >> 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

Misfire: 

TYPICAL ENABLING CONDITIONS

Monitor runs whenever following DTCs are not present P0102, P0103, P010C, P010D (MAF meter)
P0097, P0098, P0112, P0113 (IAT sensor)
P0115 - P0118 (ECT sensor)
P0120 - P0223, P2135 (TP sensor)
P0125 (Insufficient ECT for Closed Loop)
P0327 - P033D (Knock sensor)
P0335 (CKP sensor)
Battery voltage 8 V or higher
VVT system Not operated by scan tool
Engine RPM 700 to 6800 rpm
Either of the following conditions 1 and 2 are met -
1 ECT at engine start More than -7°C (19°F)
2 ECT More than 20°C (68°F)
Fuel cut OFF

Monitor period of emission-related-misfire: 

TYPICAL ENABLING CONDITIONS

First 1000 revolutions after engine start, or Check Mode Crankshaft 1000 revolutions
Except above Crankshaft 1000 revolutions x 4

Monitor period of catalyst-damaged-misfire (MIL blinks): 

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 Engine RPM Less than 4400 rpm
Except above (MIL blinks immediately) Crankshaft 200 revolutions