check engine still on
Thread Starter
JK Super Freak
Joined: Jun 2010
Posts: 1,130
Likes: 1
From: Howard Beach, NY
The sensor itself isn't the only possible cause.
Were any resistance readings of the O2 sensor, or the wiring harness taken?
Was the heater circuit tested with a light for illumination commensurate with duty cycle?
This is the troubleshooting chart:
P0058-O2 SENSOR 2/2 HEATER CIRCUIT HIGH
[TABLE]
[TR]
[TD="bgcolor: white, align: center"]Possible Causes
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]O2 2/2 HEATER CONTROL CIRCUIT OPEN
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]O2 2/2 HEATER GROUND CIRCUIT OPEN
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]O2 2/2 HEATER CONTROL CIRCUIT SHORTED TO VOLTAGE
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]2/2 O2 SENSOR
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]POWERTRAIN CONTROL MODULE (PCM)
[/TD]
[/TR]
[/TABLE]
Were any resistance readings of the O2 sensor, or the wiring harness taken?
Was the heater circuit tested with a light for illumination commensurate with duty cycle?
This is the troubleshooting chart:
P0058-O2 SENSOR 2/2 HEATER CIRCUIT HIGH
- When Monitored: Continuously during O2 heater operation with battery voltage between 10.4 and 15.75 volts.
- Set Condition: The PCM detects that the O2 sensor heater element input is above the maximum acceptable voltage. One trip fault. Three good trips to turn off the MIL.
[TABLE]
[TR]
[TD="bgcolor: white, align: center"]Possible Causes
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]O2 2/2 HEATER CONTROL CIRCUIT OPEN
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]O2 2/2 HEATER GROUND CIRCUIT OPEN
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]O2 2/2 HEATER CONTROL CIRCUIT SHORTED TO VOLTAGE
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]2/2 O2 SENSOR
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]POWERTRAIN CONTROL MODULE (PCM)
[/TD]
[/TR]
[/TABLE]
Thanks .....
Thread Starter
JK Super Freak
Joined: Jun 2010
Posts: 1,130
Likes: 1
From: Howard Beach, NY
Thread Starter
JK Super Freak
Joined: Jun 2010
Posts: 1,130
Likes: 1
From: Howard Beach, NY
It was the PCM. Just got the call that it was replace come pick the jeep up. Covered under 8yr/80,000 miles federal law.
22,000 miles......anyone else have their pcm fail?
22,000 miles......anyone else have their pcm fail?
JK Enthusiast
Joined: Apr 2009
Posts: 221
Likes: 0
From: Milwaukee,WI
i was under warranty and i had the o2 sensor failure going to wi from tn had it replaced (did not think it was the o2 sensors )How can all 4 o2 sensor fail at the same time? i asked but they replaced the sensors anyway. Got back to tn. and the light went on the shop that i went to had a lot of problems like that with o2 sensors and it was not a sensor problem but the pcm
JK Enthusiast
Joined: Oct 2006
Posts: 400
Likes: 1
From: Metro Detroit, Michgan
had the same problem I changed the 02 myself and found some frayed wires due to harness coming loose. Persistent problem had the pcm replaced, and then finally they changed the cats.
Thread Starter
JK Super Freak
Joined: Jun 2010
Posts: 1,130
Likes: 1
From: Howard Beach, NY
i was under warranty and i had the o2 sensor failure going to wi from tn had it replaced (did not think it was the o2 sensors )How can all 4 o2 sensor fail at the same time? i asked but they replaced the sensors anyway. Got back to tn. and the light went on the shop that i went to had a lot of problems like that with o2 sensors and it was not a sensor problem but the pcm