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2005 Chrysler town & country 3.8 p0133 code
- Mechanic 350
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7 years 9 months ago - 7 years 9 months ago #19797
by Mechanic 350
Slow responding 02 b1s1 sensor
Captured data:
02 sensor b1s1 0.725 and switching.
Rear: 0.625 and barely moving.
I’m looking at the stft at -3.9 is constantly taking away fuel as Paul’s book tells me what to look for. The LTFT stays at 3.1 without moving. Do I have a bad rear 02 sensor?
What is the best course of action at tackling this job. I’m a self taught mechanic don’t work no shop. Thanks fellows.
2005 Chrysler town & country 3.8 p0133 code was created by Mechanic 350
Captured data:
02 sensor b1s1 0.725 and switching.
Rear: 0.625 and barely moving.
I’m looking at the stft at -3.9 is constantly taking away fuel as Paul’s book tells me what to look for. The LTFT stays at 3.1 without moving. Do I have a bad rear 02 sensor?
What is the best course of action at tackling this job. I’m a self taught mechanic don’t work no shop. Thanks fellows.
Last edit: 7 years 9 months ago by Mechanic 350.
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- Chad
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- I am not a parts changer.
7 years 9 months ago - 7 years 9 months ago #19813
by Chad
"Knowledge is a weapon. Arm yourself, well, before going to do battle."
"Understanding a question is half an answer."
I have learned more by being wrong, than I have by being right.
Replied by Chad on topic 2005 Chrysler town & country 3.8 p0133 code
B1S1 = Bank 1, Sensor 1. This is a front sensor. Not rear.
Bank 1 is the side with cylinder #1. (Bank 2 is the side that does NOT have cylinder #1) Sensor 1 is UPSTREAM. Upstream means BEFORE the Catalytic Converter. Sensor 2 is DOWNSTREAM. Downstream means AFTER the Catalytic Converter.
The Upstream O2 sensors should cycle between 200mV, or les, to 800mV, or more. This code means that it is taking to long to cross the 450mV mid-way point. Above 450mV is rich. Below 450mV is lean. The Downstream sensor looks good. Due to the Catalytic converter doing its job of storing oxygen for later use, the downstream sensor is, usually, steady and slightly rich.
Before condemning the O2 sensor, Check for exhaust leaks.
Bank 1 is the side with cylinder #1. (Bank 2 is the side that does NOT have cylinder #1) Sensor 1 is UPSTREAM. Upstream means BEFORE the Catalytic Converter. Sensor 2 is DOWNSTREAM. Downstream means AFTER the Catalytic Converter.
The Upstream O2 sensors should cycle between 200mV, or les, to 800mV, or more. This code means that it is taking to long to cross the 450mV mid-way point. Above 450mV is rich. Below 450mV is lean. The Downstream sensor looks good. Due to the Catalytic converter doing its job of storing oxygen for later use, the downstream sensor is, usually, steady and slightly rich.
Before condemning the O2 sensor, Check for exhaust leaks.
"Knowledge is a weapon. Arm yourself, well, before going to do battle."
"Understanding a question is half an answer."
I have learned more by being wrong, than I have by being right.
Last edit: 7 years 9 months ago by Chad.
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- Full time HACK since 2012
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