how do i tell if they secondary o2 heater sensor is going bad? it keeps throwing this code.. ive posted about this before.. and it still wont go away blah.. i bought a new one too and put it on it still threw the code..

 

Do you have a straight pipe or a high flow cat. where the stock one would be?

 

its stock cat.. i tried resetin the ecu by pullin the battery cable.. and i wait for like 20 seconds.. put the battery cables back on and the ecu doesnt reset. throws same code. 65

 

Sounds like your o2 sensor is bad.

 

i thought code 63 means your o2 sensor is bad..

 

noob question: the o2 sensor checks temp in the exhaust... or exhaust flow??? idk any info would be cool

 

dood this is wack ;(

 

any 1?

 

dont wanna waste my money and buy anotehr secondary o2 sensor if its fixable.. since its NOT throwing a code 63. its throwin a 65.

 

anyone?..

 

bump for an answer. i tried to reset ecu but it doesnt reset it just throws it again.

 

bump its been like 2 weeks lol ive been patient.

 

no one?

 

deng no one? can help?

 

Get a Helms.

Get a meter.

Measure the O2 heater resistance (as the Helms manual instructs one to do).

Spec is 15-40 ohms.

If it's out of spec, replace it. If it's in spec, follow the Helms troubleshooting outline for futher investigation. There aren't but 3 parts to this 'system': The O2 sensor itself, the wiring harness and the ECU. It's gonna get spendy replacing the other two vs troubleshooting correctly - your call.

 

is it bad to drive with a code 65?

 

I don't know. I generally fix what is broke on my car. I've found that leaving a problem go un-fixed only causes bigger problems down the road.

 

any one know if its bad to drive with a code 65???????