It is best to Google your engine firing order and look at Google images to know for sure what side is Bank-1. Bank-1 is the side of the engine with the number-1 cylinder.
Have you ever seen an internal PCM failure cause this sort of thing? All four sensors on a 4.3 Silverado I'm working on are fixed at 0.45V and I have no idea why. I've been sorting through everything trying to figure out what could be wrong, but a PCM failure is all I can think, unless one of the signal wires has manged to ground itself somewhere. Which also seems unlikely, as I've gone through most of the harness between the PCM and O2 sensors.
@@alexp6016 interesting! thanks. isnt the exhaust inheriently grounded since it is hard connected to the engine? Perhaps an auxillary ground might be helpful- attached to the exhaust? Also- perhaps the wrong anti-seize compound could throw things off? THNAKS
Shivy..? Never heard of that... would this work on a chevy..?
Wow , u are on point. Thank u.
I ran through a large thing of water can that mess up the O2 sensor
0:48 is this diagram looking down on the vehicle? Bank 1 passenger side?
It is best to Google your engine firing order and look at Google images to know for sure what side is Bank-1. Bank-1 is the side of the engine with the number-1 cylinder.
Have you ever seen an internal PCM failure cause this sort of thing? All four sensors on a 4.3 Silverado I'm working on are fixed at 0.45V and I have no idea why. I've been sorting through everything trying to figure out what could be wrong, but a PCM failure is all I can think, unless one of the signal wires has manged to ground itself somewhere. Which also seems unlikely, as I've gone through most of the harness between the PCM and O2 sensors.
Did you find the cause (or solution)? I have this same issue on a 1999 Tahoe, not reading live O2 sensor data and all fixed at .445v. PCM failure?
@@kend4718 I did find it, it turns out the exhaust was not grounded. The O2 sensors are grounded through the body of the sensors, through the exhaust.
@@alexp6016 interesting! thanks. isnt the exhaust inheriently grounded since it is hard connected to the engine? Perhaps an auxillary ground might be helpful- attached to the exhaust? Also- perhaps the wrong anti-seize compound could throw things off? THNAKS
@@atomicdmt8763 Yeah, it seems it needs additional grounding farther back. Anti-seize and corrosion could probably affect the grounding.
I got new catalyc converters, i replaced a bunch of sensors. Also my exhaust has a crack. Will that caused the o2 sensor and this code to show up?
What would an 'exhaust leak' look like? What do you actually check for?
Look for road damage, holes, anything coming apart, and blown out gaskets.
will do , thanks. @@HVAC_Mechanic
@@HVAC_MechanicI have a Crack in my muffler will that cause it? 😅
@@lorenzovonmatterhorn4756no