Replaced O2 sensor and it's still setting it off and had ...
Responses
sprinkles08
272 days ago
Hello and welcome to JustAnswer!
I am sorry to hear you are having problems with your vehicle.
You will be automatically offered a phone call by the website, which I am not personally able to complete. A phone call is not necessary or required and you can ignore the offer if you wish.
What P codes are setting?
Customer
272 days ago
I had the flange on the exhaust system replaced what a flex pipe and O2 sensor bank one was replaced and it's also said my brake switch was voltage and it was changed to he keeps on setting off the check engine light what else could it be
sprinkles08
272 days ago
What P codes are setting?
Customer
272 days ago
What do you mean buy p codes settings
sprinkles08
272 days ago
I need to know all P code numbers that are currently setting in the powertrain control module after parts were replaced, codes were cleared, and the engine light came back on. The codes start with a P and have four digits.
Customer
272 days ago
Po491. Po420. Po572
sprinkles08
272 days ago
What engine do you have?
Customer
272 days ago
2.4 dohc
sprinkles08
272 days ago
If the brake switch has been replaced with a known good part then the P0572 is being set by a wiring or possibly a connection issue.
If there are no exhaust leak upstream of the catalytic converter, and the downstream [oxygen sensor](/topics-oxygen-sensor-dodge/) wasn't replaced while leaving an aged, lazy upstream sensor in place, then the catalytic converter will need to be replaced to repair the P0420.
Still not sure what you need?
Have a certified mobile mechanic diagnose what's wrong with your car, at your home or office.
Top Questions
Trending Topics
What others are asking
Oil leak.
I would start out by taking a large piece of cardboard and park your car over it over night, by looking at the drips on the cardboard this will tell you roughly where the drips are coming from. Sometimes drips...
Window not going up or down
The window regulator is most likely broken and needs replaced if you hear the motor crunch when operated. I recommend you have a mechanic like ones from YourMechanic come by to determine why your window is not going up or...
Changing transmission fluid on a Honda
If the transmission fluid is dirty (https://www.yourmechanic.com/article/how-often-do-i-need-to-replace-the-transmission-fluid), you can go ahead and try that. Hondas don't have real filters installed in them so you're not changing the filter, you're just changing fluid. However, whatever you do, only use Honda transmission...
2000 Lexus GS400 has new battery, but will not start
Hello. Thanks for writing in about your 2000 Lexus GS400. There are various reasons for a car not to start. The best way to determine what component is causing this is by having a technician scan the VSC (vehicle stability...
My brakes don't smoothly stop when applied. What's causing the inconsistent pressure?
The choppy sensation you are feeling when applying the brakes is most likely unevenly worn brake pads and/or rotors. When brakes are applied heavily or held for extended periods of time, this can generate an enormous amount of heat. As...
my check engine light came on a few weeks ago and said it was coolant issue light went out and a few days ago it came back on
Your vehicle has less than 60,000 miles and inasmuch as you mention a possible fault in the engine cooling system, you should check for warranty coverage under Chrysler's 5 year/60,000 miles powertrain warranty. If you are not covered under the...
Truck won't turn over
The battery should be load tested by a professional. Load testing can only be reliably performed on a fully charged battery. If the battery passes a load test be sure it is NOT a marginal pass in which case you...
What would cause a whining noise from the front of the engine in my 2004 Lincoln LS
Hello. A whining noise from the front of your engine can come from a number of things. Most of the time though it is caused by a failure in the power steering pump or low fluid in the pump. I...
Car overheating
Hi Susan. Thanks for contacting us today. If the car is still overheating after replacing the water pump, thermostat and temperature sensor, then there could a several reasons why. First, and most common (even with many auto repair shops) is...
Browse other content
Estimates
Maintenance
Services
Replaced O2 sensor and it's still setting it off and had to replace the flange and the flex pipe on the car and code still goes off and also says [brake](/topics-brake-dodge/) switch needs replaced is the second one I replaced <b...
Replaced O2 sensor and it's still setting it off and had to replace the flange and the flex pipe on the car and code still goes off and also says [brake](/topics-brake-dodge/) switch needs replaced is the second one I replaced Mechanic's Assistant: Do you have a scan tool to read the codes? Yes I do that's what I saying O2 sensor which I replaced the fledge had a leak in the Sledge In the Flesh of the in the flange Mechanic's Assistant: What year is your Flex? 2005 Dodge Stratus Mechanic's Assistant: Are you fixing your Flex yourself? What have you tried so far? Put it in the shop it had flex pipe put on for me and it was checked and note air escaping from the flange or the pipe system