12-19-2012, 02:45 AM
Join Date: Sep 2011
Location: South Africa
P0037 & p0141
So I recently had my exhaust system worked on and had a new mini CAT installed and the rear silencer replaced, etc. Immediately after starting the Jeep the MIL came on and my diagnostic tool provided the following error codes with accompanying descriptions.
P0037 - HO2S Heater Control Circuit Low (Bank 1 Sensor 2)
P0141 - O2 Sensor Heater Circuit (Bank 1 Sensor 2)
This obviously has to do with the O2 sensor that is between the CAT and the silencer - I have an '03 so I have two O2 sensors, 1 just before the CAT and 1 just after before the silencer. My question is this. Does this error indicate a problem with the CAT or the O2 sensor? From the descriptions I am leaning towards the O2 sensor but I don't know exactly how the error codes work regarding the CAT and exhasut system.
Any help would be much appreciated.
2003 Wrangler Sahara 4.0 42rle D30/D44
Front: 2" BDS coils + JKU shocks
Rear: 2" BB + Zone Nitro shocks
Zone 1.25" BL + 1" MML, UCF LoPro
32" BFG AT on 16" Racing Hart
Ramsey Pro Plus 6000, IPF 900s 130W