My check engine light keeps coming on and telling me I have the code P0131. This means that the upstream oxygen sensor has low voltage. I've replaced both the upstream and downstream oxygen sensors, but still get the check engine light coming on and giving the same code. What could cause this and how do I fix it?
This code does not mean to replace the sensor , testing is what is suppose to happen .
P0131 O2 Sensor Circuit Low Voltage Bank 1 Sensor 1
Honda Civic P0131 02 Sensor Diagnosis
SOURCE: Car started hesitating then died
replace the fuel filter,if this does not help,replace the fuel pump.
SOURCE: 2002 Buick Lesabre codes P0131, P0171, and P1133.
Sounds like you just need to replace the one or two 02 sensors on bank 1.If you have over 100,000 miles the 02 sensos are realy to be replaced just as spark plugs and air filteres. If you wait to long to replace them you take a chance of them not comming out and then when they do go bad you will need to replace the exhaust as well.Hope this helps and good luck.
SOURCE: 2001 buick regal w/ bad ignition coil and clogged catylitic conv.
Hello! The defective ignition coil more than likely contaminated the downstream O2 sensor...If there isn't a trouble code and engine performs in a normal fashion, there's no reason to change the upstream sensor...
Guru........Saailer
I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867
SOURCE: it wont start n trouble
I had the exact same trouble codes. I replaced the coil and the ignition module and she fired right up.
SOURCE: okay, I've replaced my oxygen sensor last week and
if you used a direct fit O2 it should not be giving you the code again unless the wires are touching near the plug, you got a defective sensor.
if you use a universal it may not read properly.
2,595 views
Usually answered in minutes!
×