warrior78

Hi guys,

My cherokee shows a check engine sign.After scanning I came through this code.

P0138-powertrain (02 sensor circuit high voltage bank 1 sensor 2)

When I asked the guy which is the defective sensor,he said to me to remove and check all of them.Will it affect the performance of my ride.

Please help me guys.

freegdr

https://www.cherokeeforum.com/f2/che...-po138-105806/

motoo344

Just a heads up, you can check the fuses, I forget exactly which one it is in the block but its a 15A. Check your wires as well make sure they aren't messed up. I reset it and it came back after 30 or so miles, just going to replace the rear o2, its like 60 bucks.

xjsnake

$60?

For what brand?

You want NTK O2 sensors in your XJ.

Rock auto has em for between $30-35

motoo344

Thanks for the heads up, I was just looking in the local box store. I thought I checked online but that must have been for something else.

warrior78

I had checked the fuses.It comes back after 30 miles.What is the location of this sensor.

salad

On phone app so can't see your signature or profile. If you have Federal Emissions package it's installed into the rear if the big catalytic converter under the passenger's feet. If you have 2000 or newer with the California Emissions package, it's in the exhaust manifold below the forward-most miniature cat

Kalali

Its on the exhaust manifold.

RSWiser

My check engine light is on. I read the codes and it says 0. Try to turn it off and it stays on.


Thoughts?

99 Cherokee Sport. I6

motoo344

What are you using to read codes with ? It's just saying 0 and nothing else ?

RSWiser

I'm using my Ultra Gauge.


When I first got it I had a code. Fixed that.

Then lately the continue 0 codes and light on.

motoo344

Interesting, anyway you can clear it and see if it comes back?

RSWiser

I push the check engine off button but it does not go off. Going to try resetting my gauge and then try again. Instructions say that some systems will not shut off the CEL

warrior78

Thanks guys.The light has gone off.The sensor was giving the headache,replaced it and now everything is fine.