P0303

System/Component
Misfire Cylinder 3
Engine position sensor (crankshaft)
Phase sensor (camshaft)

Fault Code
P0301 Cylinder 3

Fault Type
Plausibility Yes
Signal No
Minimum Threshold No
Maximum Threshold No

Monitoring Method
Engine speed roughness, (crankshaft acceleration) comparison of segment times (120°) of increment wheel

Signal Type
Misfire
ECM internal signal/value computation or comparison

Engine position sensor
pulsating rectangular wave on/off-cycles with constant or varying on/off times
ECM internal signal/value computation or comparison

Phase sensor
ECM internal signal/value computation or comparison

Operating Range
480 to 6200 rpm

Time Length and Frequency for Monitoring/Diagnosis
Catalyst damage
1.9 to 25.0 sec./permanent

Emission influence
9.7 to 125.0 sec./permanent

Criteria for storing fault code
Catalyst damage
immediately

Emission influence
fault during 2 driving cycles

Criteria for illuminating the MIL
Catalyst damage
immediately

Emission influence
fault during 2 driving cycles and end of 2nd driving cycle

Criteria used for determining out of range values and input component rationality check
UBATT No
Ground No
Disconnect No

Electronic Control Module (ECM)
Catalyst damage
Percentage misfire depends on engine load (LM) between 98 ... 572 mb/stroke and speed (n) at
1000rpm => misfire 8.2 ...13.5%
2000rpm => misfire 6.7 ...12.2%
3000rpm => misfire 4.6 ...11.0%
4000rpm => misfire 2.6 ...8.4%
5000rpm => misfire 2.6 ...8.4%
6000rpm => misfire 2.5 ...7.5%

Emission influence
36 misfire events/3000 ignitions = 1.2% (FTP)
81 misfire events/3000 ignitions = 2.7% (I/M)