1999 3.8L Service Engine Soon P0153
#1
1999 3.8L Service Engine Soon P0153
Hello, I am new to this forum. Today my wife's 1999 mustang threw a service engine soon light. I went to AutoZone and they pulled a P0153 code Oxygen Sensor Circuit Slow Response (Bank2, Sensor1). After doing some research, I am guessing that bank 2 is the driver side and sensor one is the one closest to the engine?
The engine is a stock 3.8L V6. The only thing that has been changed in the last 3 months is the thermostat. I went from a 195 degree stat to a 180 stat since the summers here in Oklahoma are very hot. Could the changing of the thermostat be causing this code to start popping up now that it is starting to get cooler? What else could be causing this SES light to come on? This evening I reset the PCM to see if it will come back.
The engine is a stock 3.8L V6. The only thing that has been changed in the last 3 months is the thermostat. I went from a 195 degree stat to a 180 stat since the summers here in Oklahoma are very hot. Could the changing of the thermostat be causing this code to start popping up now that it is starting to get cooler? What else could be causing this SES light to come on? This evening I reset the PCM to see if it will come back.
#2
That's saying the cars not getting the right air to fuel ratio, could be just a bad sensor or the cats could be clogged up. May have to have them replaced. Could even be the mass airflow sensor or exhaust leak hard to say really.
#3
Clogged cats wouldn’t cause the pre-cat sensor (sensor 1) to act up. A clogged cat would cause the post-cat sensor (sensor 2) to act up and would throw a different code all together.
http://www.obd-codes.com/p0153
Most likely its a bad O2 sensor. Bank 2 is the drivers side of the motor and sensor 1 is screwed into the exhaust manifold. Its a PITA to get to, but not impossible. Good luck...
http://www.obd-codes.com/p0153
Most likely its a bad O2 sensor. Bank 2 is the drivers side of the motor and sensor 1 is screwed into the exhaust manifold. Its a PITA to get to, but not impossible. Good luck...
#5
I didn't think it was clogged cats, the car is running fine and does not have a loss of power or choking symptom. Today the SES light came back on, so looks like I will be replacing an O2 sensor. I don't have a torch to heat it up and I suppose it will be a pain to get out since it is the factory sensor. Are there any tips/tricks to help get it out? Spray it with a lot of PB blast....haha?
#6
Most auto parts and hardware stores have small hand held torches that cost around $20. Pick one up. They are always good to have around. Either way, some kind of penetrating lube would help. To get better access you could try unbolting the front of the exhaust from the exhaust manifold. Its only 4 bolts (that are usually rusted). That should allow you to lower the front of the exhaust down a couple inches to get better access to the sensor.
When you install the new sensor, do yourself a favor and put a dab of anti-sieze on the threads of the sensor to make it easier to remove in the future if ever the need arises. Good luck...
When you install the new sensor, do yourself a favor and put a dab of anti-sieze on the threads of the sensor to make it easier to remove in the future if ever the need arises. Good luck...
#7
Do you know which part number I should get? I was looking to buy it off of rockauto.com since they seem to be a little cheaper. I am assuming that since the sensor is located in the driver side manifold, it is the "front upstream" sensor. But is this one heated? I just need to know maybe a part number or where you all have bought them in the past. I want to make sure I get the correct one, the local parts guys are not the smartest.
Thanks
Thanks
#8
Rockauto.com is great. I buy parts from them all the time.
Upstream sensor is sensor 1 (a.k.a. pre-cat sensor). Downstream is sensor 2 (a.k.a. post-cat sensor). Left/right is self explanatory. Your bad sensor is Bank 2 sensor 1. So you want an upstream left sensor. The upstream right & left sensors on these motors are identical. So get whatever upstream sensor you want. Denso, Denso, ACDelco & Motorcraft are good.
Make sure to get ‘direct fit’ or OE sensors. They come with the connector all hooked up etc. There are universal sensors that don’t have wires where you are supposed to slice the wires together. These are crap, known to fail and are fairly hard to install (correctly).
Good luck...
Upstream sensor is sensor 1 (a.k.a. pre-cat sensor). Downstream is sensor 2 (a.k.a. post-cat sensor). Left/right is self explanatory. Your bad sensor is Bank 2 sensor 1. So you want an upstream left sensor. The upstream right & left sensors on these motors are identical. So get whatever upstream sensor you want. Denso, Denso, ACDelco & Motorcraft are good.
Make sure to get ‘direct fit’ or OE sensors. They come with the connector all hooked up etc. There are universal sensors that don’t have wires where you are supposed to slice the wires together. These are crap, known to fail and are fairly hard to install (correctly).
Good luck...
Last edited by petrock; 10-05-2013 at 01:57 AM.
Thread
Thread Starter
Forum
Replies
Last Post
TfcCDR
V6 (1994-2004) Mustangs
1
09-14-2015 12:08 PM