Please Help!! O2 Issues
Thread Starter
Instructor
Joined: Apr 2005
Posts: 185
Likes: 0
From: Orlando Florida
Please Help!! O2 Issues
Last week my service engine light came on. I went to my local parts place and had them pull the codes. They codes are:
P0036
BANK 1 SEN2 HEATER CIRCUIT
P0050
BANK 2 SEN1 HEATER CIRCUIT
P0056
BANK2 SEN2 HEATER CIRCUIT
PO141
BANK 1 SEN2 HEATER CIRCUIT MALFUNCTION
P0155
BANK 2 SEN1 HEATER CIRCUIT MALFUNCTION
P0161
BANK 2 SEN2 HEATER CIRCUIT MALFUNCTION
Is it possible that all 3 02 sensors malfunctioned at 25,000 miles?
How do I check?
Thanks
P0036
BANK 1 SEN2 HEATER CIRCUIT
P0050
BANK 2 SEN1 HEATER CIRCUIT
P0056
BANK2 SEN2 HEATER CIRCUIT
PO141
BANK 1 SEN2 HEATER CIRCUIT MALFUNCTION
P0155
BANK 2 SEN1 HEATER CIRCUIT MALFUNCTION
P0161
BANK 2 SEN2 HEATER CIRCUIT MALFUNCTION
Is it possible that all 3 02 sensors malfunctioned at 25,000 miles?
How do I check?
Thanks
Racer
Joined: Sep 2007
Posts: 320
Likes: 28
do you have headers?
if so check the o2 extensions to see if they resting on the exhaust anywhere and grounding out the heater circuit. the heater circuit for all sensors run off one fuse. if none are touching, maybe one of the sensors is internaly shorted.
if so check the o2 extensions to see if they resting on the exhaust anywhere and grounding out the heater circuit. the heater circuit for all sensors run off one fuse. if none are touching, maybe one of the sensors is internaly shorted.
Thread Starter
Instructor
Joined: Apr 2005
Posts: 185
Likes: 0
From: Orlando Florida
o2 connector
Can anyone take a voltage reading on the taupe/light brown wire ( I think its wire "B" on the connector) at the o2 connector just underneath the fuel rail cover. Have it connected and car running. Back probing the connector worked best for me. Driver or passenger side would be fine.
Thank you in advance.
Thank you in advance.
