P0316 & P0430 Error Code
Junior Member
Joined: Feb 2023
Posts: 7
Likes: 1
From: Alberta
Thank you Bluegrass for being so prompt and helpful,
Looking at the data from yesterday the voltages of the sensors are as follows;
Bank 1 rear sensor .71 - .77 volts and the Bank 2 sensor .75 - .78 volts.
Only diference I see in the scope recordings is the Bank 1 sensor respond rather quickly, whereas the Bank 2 sensor is much slower - the dwell times are longer.
That being said, in general both voltages fluctuate in unison.
That makes me think that the problem is either in Sensor or Cat Converter.
I've reset the code and will see if the additive is going to have effect before going any further. Thus far I've driven aproximovaly 1000 Km between the Engine fault indications.
I'll report any findings I come across.
Thank you again for your kind help.
George
Looking at the data from yesterday the voltages of the sensors are as follows;
Bank 1 rear sensor .71 - .77 volts and the Bank 2 sensor .75 - .78 volts.
Only diference I see in the scope recordings is the Bank 1 sensor respond rather quickly, whereas the Bank 2 sensor is much slower - the dwell times are longer.
That being said, in general both voltages fluctuate in unison.
That makes me think that the problem is either in Sensor or Cat Converter.
I've reset the code and will see if the additive is going to have effect before going any further. Thus far I've driven aproximovaly 1000 Km between the Engine fault indications.
I'll report any findings I come across.
Thank you again for your kind help.
George
Senior Member
Joined: Sep 2011
Posts: 384
Likes: 146
I too am starting to experience the P0430 code problem.
It started about a 3 weeks ago with a misfire. Cleared the code using a Forscan. Lasted about a week and again the P0430 popped up.
The diagnostics shows all of the sensors at "NO FAULT".
Only discrepancy I see is in the Scope function of the software where the O2S22 voltage fluctuations are slow compared the O2S12 on the passenger side (please see attached pdf)
Can any of you friends be able to give me some insight as to where my problem could be?
It started about a 3 weeks ago with a misfire. Cleared the code using a Forscan. Lasted about a week and again the P0430 popped up.
The diagnostics shows all of the sensors at "NO FAULT".
Only discrepancy I see is in the Scope function of the software where the O2S22 voltage fluctuations are slow compared the O2S12 on the passenger side (please see attached pdf)
Can any of you friends be able to give me some insight as to where my problem could be?
been doing this for 30 years...
front 02 is suppose to fluctuate.
rear 02 "cat monitor" is suppose to be flat
when it fluctuates, cat is done.
theres also a pid, "02 % saturation"
thats tells you where the cat is in regards to its efficiency
Junior Member
Joined: Feb 2023
Posts: 7
Likes: 1
From: Alberta
Thank you Slater for taking the time to read and post. I appreciate your input.
Not second guessing you as you know your stuff no doubt - but why Code P0430 only for the Bank 2 and not Bank 1?
Both Downstream sensors fluctuate, except Bank 1 sensor responds faster than the Bank 2.
Thank you,
George
Not second guessing you as you know your stuff no doubt - but why Code P0430 only for the Bank 2 and not Bank 1?
Both Downstream sensors fluctuate, except Bank 1 sensor responds faster than the Bank 2.
Thank you,
George
Senior Member
Joined: Mar 2021
Posts: 4,792
Likes: 2,395
Thank you Bluegrass for being so prompt and helpful,
Looking at the data from yesterday the voltages of the sensors are as follows;
Bank 1 rear sensor .71 - .77 volts and the Bank 2 sensor .75 - .78 volts.
Only diference I see in the scope recordings is the Bank 1 sensor respond rather quickly, whereas the Bank 2 sensor is much slower - the dwell times are longer.
That being said, in general both voltages fluctuate in unison.
That makes me think that the problem is either in Sensor or Cat Converter.
I've reset the code and will see if the additive is going to have effect before going any further. Thus far I've driven aproximovaly 1000 Km between the Engine fault indications.
I'll report any findings I come across.
Thank you again for your kind help.
George
Looking at the data from yesterday the voltages of the sensors are as follows;
Bank 1 rear sensor .71 - .77 volts and the Bank 2 sensor .75 - .78 volts.
Only diference I see in the scope recordings is the Bank 1 sensor respond rather quickly, whereas the Bank 2 sensor is much slower - the dwell times are longer.
That being said, in general both voltages fluctuate in unison.
That makes me think that the problem is either in Sensor or Cat Converter.
I've reset the code and will see if the additive is going to have effect before going any further. Thus far I've driven aproximovaly 1000 Km between the Engine fault indications.
I'll report any findings I come across.
Thank you again for your kind help.
George
What you may take as a small difference in output voltage [ .75 to .71 ] is a >big change< to the operating system.
Testing, the system does, is also for response time Lean to Rich & Rich to Lean speed of response to Throttle and Auto shifting during the drive cycles and can be a combination of speed due to the Cat and Sensor contaminations, combined.
These mode tests # are given in most good Scanners.
.
I can't say enough, the whole system is way more technical and complex in operation then most ever think.
Good luck.
Junior Member
Joined: Feb 2023
Posts: 7
Likes: 1
From: Alberta
Thank you Bluegrass for explaining the function of the system and the parameters.
As suggested earlier I am going to try the Cat additive (coming in tomorrow) and see if the problem goes away or not.
By the sounds of what you and Slater are suggesting, most likely the Cat needs replacing anyway.
Thank you,
George
As suggested earlier I am going to try the Cat additive (coming in tomorrow) and see if the problem goes away or not.
By the sounds of what you and Slater are suggesting, most likely the Cat needs replacing anyway.
Thank you,
George