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Home >> Lexus >> 2008 >> GX 470 >> 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 (CKP sensor)
P0500 (VSS)
Battery voltage 8 V or more
Throttle position learning Completed
VVT system Not operate by scan tool
Engine RPM 400 to 5700 rpm
Either of following conditions is met Conditions (a) or (b)
(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 1000 revolutions after engine start, or Check Mode Crankshaft 1000 revolutions
Except above Crankshaft 1000 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 2800 revolutions
Except above (MIL blinks immediately) Crankshaft 200 revolutions