cel help

JUICED COUPE

Well-Known Member
Joined
Dec 20, 2008
Location
Belmont
OK I picked up a 96 zj 4.0. The cel is on. I took it to advance to have the codes pulled. Came up with 4 things...
1. o2 sensor bank 1 sensor 1 high voltage
2. o2 sensor bank 1 sensor 1
3. o2 sensor bank 1 sensor 2
4. o2 sensor bank 1 sensor 2 (something about a heater)
 
means you most likely need atleast a new bank1 sensor 1 O2 sensor (o2 before the cat)

sensor 1 could be sending a bad signal to the ecm causeing sensor 2to act up i would just put in two new o2 sensors since nowadays they arnt but 20bucks or so
 
PO said he replaced them and the light came back on a couple weeks later. For the heater code could that mean the relay for the heater is bad? Where is the relay located on the zjs?
 
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