Live Data CL-FAIL ?
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From: Near St louis, IL.
Live Data CL-FAIL ?
Been chasing problems on my 1999 v10 F250. Finally today found one of my new coils went bad, swapped it out for an old one, and she runs nice and smooth.
Cleared all my codes ( random misfire, misfire cyl 5, and an egr code that pops up every so often), checked my live data to find
Fuel system bank 1 CL
Fuel system bank 2 CL-FAIL
No codes? Any idea what I've got going on here? Truck seems to run great.
Thanks for any help!
Cleared all my codes ( random misfire, misfire cyl 5, and an egr code that pops up every so often), checked my live data to find
Fuel system bank 1 CL
Fuel system bank 2 CL-FAIL
No codes? Any idea what I've got going on here? Truck seems to run great.
Thanks for any help!
Hotshot
Joined: Jan 2004
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From: St Louis
I don't think it's noise. I suspect that it's simply reporting that bank 2 is not operating properly in closed loop operation while bank 1 is.
However (there's always one of those), since the PCM is running an OBD1 calibration, I suspect that there is no separate bank 2 control (perhaps it's all lumped together) for he software to find so it simply indicates a failure. Just a hunch since I don't know much about the actual OBD1 calibrations. After all, I'm a bit of a noob on the SD lineup and don't know the full extent to which the PCM has been brain-damaged as compared to the full capabilities with an OBDII calibration.
However (there's always one of those), since the PCM is running an OBD1 calibration, I suspect that there is no separate bank 2 control (perhaps it's all lumped together) for he software to find so it simply indicates a failure. Just a hunch since I don't know much about the actual OBD1 calibrations. After all, I'm a bit of a noob on the SD lineup and don't know the full extent to which the PCM has been brain-damaged as compared to the full capabilities with an OBDII calibration.
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From: Long Island USA
From what I've looked at, and read, these trucks do everything exactly the same as OBD-II, so they do monitor bank 1 and bank2.
The differences are certain thresholds for throwing codes (misfires, MAF function, temp, etc), and that certain monitors never say "complete" - like O2 heater monitor, catalyst monitor, etc.
I have never EVER seen anything that says a PCM can run in closed-loop on one back and not the other.
The differences are certain thresholds for throwing codes (misfires, MAF function, temp, etc), and that certain monitors never say "complete" - like O2 heater monitor, catalyst monitor, etc.
I have never EVER seen anything that says a PCM can run in closed-loop on one back and not the other.
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FTE Leadership Emeritus
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From: Long Island USA
Ah HAH! I get it now...
When I first heard this, I thought "he doesn't mean FUEL SYSTEM 2", does he?
It's not "bank 1" and "bank 2"... It's "fuel system 1" and "fuel system 2".
At one time, and maybe in the future, the gas-engine trucks were available as bi-fuel. Gasoline and Propane, or Gasoline and Natural-Gas.
Two completely different fuel systems. Hence "fuel system 1" and "fuel system 2".
Since yours is gas-only, the results for "fuel system 2" don't mean anything.
When I first heard this, I thought "he doesn't mean FUEL SYSTEM 2", does he?
It's not "bank 1" and "bank 2"... It's "fuel system 1" and "fuel system 2".
At one time, and maybe in the future, the gas-engine trucks were available as bi-fuel. Gasoline and Propane, or Gasoline and Natural-Gas.
Two completely different fuel systems. Hence "fuel system 1" and "fuel system 2".
Since yours is gas-only, the results for "fuel system 2" don't mean anything.
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From: Near St louis, IL.
That would make sense, but when I click "yes" on the line that says "FUELSYS2: CL-FAULT" , it takes me to the description in the second pic saying "Fuel system bank2 status CL-FAULT".
By definition saying fault reading is directed at bank 2 ?
If it didn't read right and left bank separately would there be a need for the truck to have an oxygen sensor on each side?
By definition saying fault reading is directed at bank 2 ?
If it didn't read right and left bank separately would there be a need for the truck to have an oxygen sensor on each side?
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From: Long Island USA
The PCM DOES monitor each bank. But it doesn't operate each bank separately in terms of "closed loop".
I googled "FUELSYS2" (notice the double quotes) and found other scanners that say "Fuel System 2 Status" for that PID. I think your scanner's manufacturer made a boo-boo on the help text
I googled "FUELSYS2" (notice the double quotes) and found other scanners that say "Fuel System 2 Status" for that PID. I think your scanner's manufacturer made a boo-boo on the help text
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