O2 Heater Sensor Replacement - How Difficult for DIY??

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Notrega

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Simple question...

I am getting codes P0135 and P0155
Oxygen O2 Sensor Heater Circuit Malfunction Banks 1 & 2
I understand that these sensors are in the exhaust after the manifold. So the question is - how difficult is this to replace on my own?
 

Bedrck47

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P0135 - O2 Heater Circuit (Bank 1, Sensor 1)
Description: During testing the heated oxygen sensor (HO2S) heaters are checked for open and short circuits and excessive current draw. The test fails when the current draw exceeds a calibrated limit or an open or short circuit is detected.
Possible Causes: Vacuum hose disconnected on exhaust gas recirculation (EGR) system module (ESM) applications
Short to VPWR in the harness or HO2S
Water in the harness connector
Open VPWR circuit
Open GND circuit
Low battery voltage
Corrosion or incorrect harness connections
Damaged HO2S heater

Diagnostic Aids: Check the HO2S electrical connector for damage, corrosion, and water intrusion.
Damaged HO2S heater.

P0155 - O2 Heater Circuit (Bank 2, Sensor 1)
Description: See the description for DTC P0135.
Possible Causes: See the possible causes for DTC P0135.
Diagnostic Aids: See the diagnostic aids for DTC P0135



Bank 1 is Passenger side
Bank 2 is Drivers side

Sensor 1 is the sensor before the Cat.
 

DetroitDarin

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Should be straight forward; get an O2 sensor wrench and soak it in PBBlaster and should be good to hook.
 

Bedrck47

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Fuse #32 is common to all 4 O2 sensors heaters but it also powers other circuits Could be worth checking
 

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