Code 512, I think
Thread Starter
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Trailering
Joined: Apr 2023
Posts: 22
Likes: 1
Okay bought a scanner and got the codes. I tried to clear the memory but not sure if I did or not. Still got the 512 during the KOEO test. Now I have the codes 311,411,167 during the KOER test. What are those codes?
Hotshot
Joined: Jul 2020
Posts: 10,551
Likes: 2,669
From: Near Salt Lake City
167 Insufficient throttle position change during dynamic response test KOER
311 Secondary air system inoperative during KOER bank 1 dual HEGO's
411 Cannot control RPM during KOER low RPM check
311 Secondary air system inoperative during KOER bank 1 dual HEGO's
411 Cannot control RPM during KOER low RPM check
Hotshot
Joined: Jul 2020
Posts: 10,551
Likes: 2,669
From: Near Salt Lake City
So, in the middle of that running test you are to do 3 things quick, any order
Actuate the BOO switch by pressing hard on the brakes
You are to make the PSPS switch close by turning the steering wheel back and forth once hard
You are to perform a brief WOT (wide open throttle) (missing this during the running test sets the 167 code)
First Q
Is the truck stock?
Probably ought to attempt a few pinpoint tests for the other 2 codes (unless the air system has been deleted)?
Actuate the BOO switch by pressing hard on the brakes
You are to make the PSPS switch close by turning the steering wheel back and forth once hard
You are to perform a brief WOT (wide open throttle) (missing this during the running test sets the 167 code)
First Q
Is the truck stock?
Probably ought to attempt a few pinpoint tests for the other 2 codes (unless the air system has been deleted)?
Thread Starter
|
Trailering
Joined: Apr 2023
Posts: 22
Likes: 1
So, in the middle of that running test you are to do 3 things quick, any order
Actuate the BOO switch by pressing hard on the brakes
You are to make the PSPS switch close by turning the steering wheel back and forth once hard
You are to perform a brief WOT (wide open throttle) (missing this during the running test sets the 167 code)
First Q
Is the truck stock?
Probably ought to attempt a few pinpoint tests for the other 2 codes (unless the air system has been deleted)?
Actuate the BOO switch by pressing hard on the brakes
You are to make the PSPS switch close by turning the steering wheel back and forth once hard
You are to perform a brief WOT (wide open throttle) (missing this during the running test sets the 167 code)
First Q
Is the truck stock?
Probably ought to attempt a few pinpoint tests for the other 2 codes (unless the air system has been deleted)?
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Hotshot
Joined: Jul 2020
Posts: 10,551
Likes: 2,669
From: Near Salt Lake City
Your catalytic converter
When the substrate gets broken up
Sometimes it can go sideways in there and you cannot go over say 30 MPH intermittently
It can get straightened back out and all of the sudden the truck goes fine
If you are looking at a drivability issue as well as the codes, some hoops are next
Pinpoint tests and drive it with a fuel pressure and a vacuum gauge taped to the windshield
You want to see if and when it falls on it's face, if the vacuum goes to zero, and what is the fuel pressure doing
007
When the substrate gets broken up
Sometimes it can go sideways in there and you cannot go over say 30 MPH intermittently
It can get straightened back out and all of the sudden the truck goes fine
If you are looking at a drivability issue as well as the codes, some hoops are next
Pinpoint tests and drive it with a fuel pressure and a vacuum gauge taped to the windshield
You want to see if and when it falls on it's face, if the vacuum goes to zero, and what is the fuel pressure doing
007
Thread Starter
|
Trailering
Joined: Apr 2023
Posts: 22
Likes: 1
Your catalytic converter
When the substrate gets broken up
Sometimes it can go sideways in there and you cannot go over say 30 MPH intermittently
It can get straightened back out and all of the sudden the truck goes fine
If you are looking at a drivability issue as well as the codes, some hoops are next
Pinpoint tests and drive it with a fuel pressure and a vacuum gauge taped to the windshield
You want to see if and when it falls on it's face, if the vacuum goes to zero, and what is the fuel pressure doing
007
When the substrate gets broken up
Sometimes it can go sideways in there and you cannot go over say 30 MPH intermittently
It can get straightened back out and all of the sudden the truck goes fine
If you are looking at a drivability issue as well as the codes, some hoops are next
Pinpoint tests and drive it with a fuel pressure and a vacuum gauge taped to the windshield
You want to see if and when it falls on it's face, if the vacuum goes to zero, and what is the fuel pressure doing
007
Hotshot
Joined: Jul 2020
Posts: 10,551
Likes: 2,669
From: Near Salt Lake City
Nothing will screw you like that besides the TP sensor as far as those codes, and you have no actual TP code
So, I'd be all for seeing the TP voltage throughout its range
The 3 digit code trucks have PID capability
So a bad **** scanner will read pids like my NGS
You can carefully backprobe the TP connector looking for .8 to 1.3v closed throttle and 4.5 to 5.0v at WOT
Then clear codes and retest
So, I'd be all for seeing the TP voltage throughout its range
The 3 digit code trucks have PID capability
So a bad **** scanner will read pids like my NGS
You can carefully backprobe the TP connector looking for .8 to 1.3v closed throttle and 4.5 to 5.0v at WOT
Then clear codes and retest
Hotshot
Joined: Jul 2020
Posts: 10,551
Likes: 2,669
From: Near Salt Lake City
Sounds like your exhaust will not or should not be plugged up
I would test the engine vacuum while driving it around anyway, along with the fuel pressure test gauge on the windshield
I would test the engine vacuum while driving it around anyway, along with the fuel pressure test gauge on the windshield