Originally Posted by Twister1
Engine misfire, cyl 6 misfire
2012 Wrangler Sport, 30K miles, 6sp manual, almost no electronics/power except a radio.
The motor seems to be running fine, I don't feel or hear any misfires, and it idles smoothly. I'm thinking maybe a bad sensor somewhere. Any ideas?
TSB 18-007-12 may relate to your vehicle:
Flash: MIL Illumination P0441, P0300, P0301, P0302, P0303, P0304, P0305, P0306,
P0420, P0430, P0133, P0153, P0835
This bulletin involves selectively erasing and reprogramming the Powertrain Control
Module (PCM) with new software.
2012 (JK) Wrangler
NOTE: This bulletin applies to vehicle equipped with a 3.6L engine (sales code ERB)
built before **January 24, 2012 (MDH 0124XX)**.
The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon
further investigation the Technician may find that any of the following Diagnostic Trouble
Codes (DTC's) have been set.
a. **P0441 - Evap Purge System Performance**
b. P0420 - Catalyst Efficiency (Bank 1)
c. P0430 - Catalyst Efficiency (Bank2)
d. P0133 - O2 Sensor 1/1 Slow Response
e. P0153 - O2 Sensor 2/1 Slow Response
f. P0300 - Multiple Cylinder Misfire
g. P0301 - Cylinder 1 Misfire
GROUP: Vehicle Performance
DATE: February 07, 2012
h. P0302 - Cylinder 2 Misfire
i. P0303 - Cylinder 3 Misfire
j. P0304 - Cylinder 4 Misfire
k. P0305 - Cylinder 5 Misfire
l. P0306 - Cylinder 6 Misfire
m. P0835 - Clutch Pedal Switch "B" Circuit High Manual Transmission Vehicles Only
Updating the software will correct the conditions listed above.
Please let me know if you have any further questions.