P1305

(_P1201_) or (_P1301_)
- The scan tool indicates Diagnostic Trouble Code (DTC) P1201 or P1301: Cylinder 1 misfire.
(_P1202_) or (_P1302_)
- The scan tool indicates Diagnostic Trouble Code (DTC) P1202 or P1302: Cylinder 2 misfire.
(_P1203_) or (_P1303_)
- The scan tool indicates Diagnostic Trouble Code (DTC) P1203 or P13O3: Cylinder 3 misfire.
(_P1204_) or (_P1304_)
- The scan tool indicates Diagnostic Trouble Code (DTC) P1204 or P1304: Cylinder 4 misfire.
(_P1205_) or (_P1305_)
- The scan tool indicates Diagnostic Trouble Code (DTC) P1205 or P1305: Cylinder 5 misfire.
(_P1206_) or (_P1306_)
- The scan tool indicates Diagnostic Trouble Code (DTC) P1206 or P1306: Cylinder 6 misfire.

Description
Misfire detection is accomplished by monitoring the voltage of the spark plug with the spark plug voltage sensor which is built into the ignition coil.
If misfiring strong enough to damage the catalyst is detected, the MIL will blink during the time of its occurrence, and a misfire DTC will be stored. Then, after the misfire has ceased, the MIL will come on.
If misfiring that increases emissions is detected during two consecutive driving cycles, the MIL will come on, and a misfire DTC will be stored.

NOTE:
- If some of the DTCs listed below are stored at the same time as a misfire DTC, troubleshoot those DTCs first, then troubleshoot the misfire DTC.

PO1O6: MAP sensor
PO171, PO172, PO174, PO175: Fuel supply system
PO401, P1491, P1498: EGR system
P0441: EVAP incorrect purge flow P1316, P1317, P1318, P1319: Spark Plug Voltage Detection System PO335, PO336, P1336, P1337: CKP sensor P1381, P1382, P1386,P1387: CYP sensor

Possible Cause
- Fuel injector clogging, fuel leakage, air leakage
- Fuel injector circuit open or shorted
- Injector resistor malfunction
- Spark plug carbon deposits, fouling, malfunction
- Ignition coil malfunction
- ICM malfunction
- Ignition wires open
- Compression low
- Valve clearance out of spec

NOTE:
- If there is no freeze data of misfiring, just clear the DTC.
- If there is no freeze data of misfiring, test drives under various conditions are necessary.