Thus, it will also signal the ECU to store the P code and turn on the check engine light. The catalytic converter depends on the oxygen sensors to operate efficiently. For that reason, it is important to perform an oxygen sensor test before replacing or cleaning the catalytic converter.
A comprehensive list of other issues that could cause the ECU to store a P code is as follows:. As you can see there are quite a few issues that could cause the P code to be stored by the ECU. It is worth taking the time to check them out thoroughly before you replace the catalytic converter. This P obd2 code indicates that there is a problem with the catalytic converter, oxygen sensors or both.
When this code is stored by the ECU, the malfunction indicator lamp will come on. This is your first sign that there is a problem somewhere in the emission system. Other signs to watch for are lack of engine power, decreased fuel economy or a rotten egg Sulphur smell. If any of these other signs appear then you need to get the ECU scanned. This will tell you if there is one or multiple codes stored, that are contributing to the problem. The symptoms of a bad catalytic converter which may lead to P fault code includes one or more of the following:.
As previously stated, there are quite a few issues that could cause the ECU to store P code. So where do you start to try and figure out what the problem is? The best way to start is to refer to a list of common issues and eliminate them one by one.
By doing this you will eventually uncover the issue. In most cases, the failing catalytic converter is not dangerous and poses no risk to the occupants of the car. The real risk is that serious damage to the catalytic converter may occur unless the P code is resolved quickly. It is important to note that the ignition, fuel and air intake systems can contribute to damaging the catalytic converter. As a matter of fact, these systems are the most frequent causes of the P error code.
For this reason, we recommend that these systems are thoroughly checked out before replacing the catalytic converter. At the dealership they verified the issue. However I got that converter replaced last October at a garage in my town. I cleared the check engine light and 3 days later it came back on. Guess I have to take it back to the garage where I had it worked on last year. FYI, never had an error code before until I added a fuel treatment from Lucas.
The engine ran fine, no problems until the engine light came on sometime after adding the treatment. The fuel treatment has not made any of my other cars engine lights come on, just my GMC Sierra Many times this deposit will burn off and not be a problem afterwards.
My Chevy Avalanche is throwing both P and P With the advanced troubleshooting on the FIXD it is telling me that the evap system is failing. I have replaced the vent valve and the purge valve and the gas cap.
What should I look at next? It has now come back on with the same p code. I did not replace the a-f sensor where is it located and what are my options? I had the P code pop up a while ago. A few days ago I changed the bank 1 catalytic converter. When I turned the car on and ran a scan the P code along with 5 out of 6 cylinders showing a misfire. I also saw the sensor needed calibration, which I did.
Has your AC has been recharged in the last 24 hours? Is so you may get one P on the next startup. The gas is heavier than air, gets sucked into the intake manifold..
Reset the MIL and the problem will not recur. I have a subaru forester non turbo that has a CEL for P bank 1. Is it possible that the downstream sensor is at fault?
Can a P bank 1 be caused by the downstream 02 sensor bank 2 , or is it only for upstream bank 1? Just drove miles from Cal to Washington. Vehicle has 78, miles on it. Running fine, no issues great gas mileage mpg. Car had California Smog test about 4 months ago and tested fine. Today while driving check engine light popped on, no other indication of any problems.
No suffer smell or rough running. Checked gas cap and it was not fully to lock clicked position. Secured it and reset engine light and so far it has not returned. Could not having gas cap secure account for this reading or do I need to go to the dealer. Catalytic Converter is supposed to be covered repair under warranty for K as I recollect will check manual in the AM before going to dealer if light comes on again..
If I keep driving for awhile with no other symptoms and check engine light does not return am I likely in the clear? I seem to recall that if gas cap not secure that can effect emissions. Can a bad catalytic converter after having put a hole in it to unblock it cause your air conditioner to turn off while driving the car? Then after shutting the car off for while and starting the car again the air conditioner will work again. Check the coils. I found the spring inside the 1 coil had disintegrated, causing a weak spark and a rich fuel mixture in that cylinder.
I have a chevy cruze 1. That i just put a new to me motor in bc it got hot smoked the head gasket and threw the timing belt in all one fluid motion while driving 65 down the interstate. Car ran fine even with the light until 2 nights ago I was taking this older gentleman home from our work.
And about 15 mins into my drive mind you im doing the speed limit of 55 when it starts bucking I back off the throttle get back into and something. But my wife gets in it to go to work yesterday and has no problems what so ever. She drops the car back off with me at work and I take her home which was a 10pm now when I got off work about 7 hours later.
The car did its cold start revs, but once it kicked down to normal running rpm which is and to rpms. Now it fluctuating in between and and when it does I can feel it in the driver seat pulsating. Got it home let I idle for a lil bit and then the intermitten almost like the car has a big vacuum leak again jumps and skips. Shut the car off for maybe 10 seconds started it back up and no hesitate jump or miss. Also I just had the oil changed 3 days ago if that means anything. And I always get gas and the same station in the same town.
About to call my local muffler shop and see if they can just put a new exhaust resignator and cats on it. And they fact that you need and sensor for a sensor so this relay to can tell this fuse to go f off. Is insane and absolutely mind blowing. But would sure appreciate some feed back on this as to I need to start planning my attack for the day being as the wife wants to be on the road by I have a Chevy Cruze. Code P None of the symptoms nor engine light. My coolant keeps disappearing.
Replaced thermostat, water pump, and radiator.. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Share Share. Code P Definition Catalyst system efficiency below threshold Bank 1. What Does P Mean? What Are the Symptoms of Code P?
Faulty oxygen sensor Faulty air-fuel sensor Worn or internally failing catalytic converter Most Common A leak in the exhaust system Misfire the root cause of converter failure Rich or Lean air-fuel ratio the root cause of converter failure Leaded Gasoline the root cause of converter failure How Serious Is Code P?
If other codes are present, they must be addressed first. Examine the exhaust system for damage and leaks. Pay close attention to the exhaust manifold, gaskets, and exhaust pipes pre-catalytic converter. If any leaks are found, repair the leak, clear the code, and complete several drive cycles to verify that was the fix. With the vehicle running and at normal operating temperature, use the digital multimeter to check the voltage reading of the downstream O2 sensor.
The downstream O2 sensor produces a relatively steady voltage reading of approximately 0. If the voltage of the downstream O2 sensor is constantly jumping between 0. Estimated Cost of Repair For error code P, one or more of the below repairs may be needed to solve the underlying issue. FIXD Team. Next article. You may also like. Hi William! Thank you for sharing your experience with us!
We really appreciate the feedback! The seller probably cleared the code just before the sale, and it took 2 days to reappear. You might also want to look on carparts. Alot of their parts are a little less expensive. Look on card to look for parts. Yes I did know you had trained service professionals who could assist me with advice. Very good information. How do I find the videos on fixing the car it shows the parts.
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