Error code, AF-2, AF-6

[Woodside773]

Received error codes AF-2 and AF-6 a couple of days back, cleaned the air filters but found the error code returned yet again. Thinking my problem would be solved with new air filters, purchased a set from the local dealer, but alas the codes are still on the panel. And of course that lovely "beeping"noise. My guess is it is the sensor or related. Is there a resistance reading available for this sensor? I am thinking of pulling off the intake system up to the manifold for cleaning, maybe somebody is making a home in the rubber hose!! Am I missing something? Thank you for any input.

 

[Tazza]

It could be a bad sender or bare wire somewhere. I can't remember the BOSS codes, one is sender not connected, sender out of range, short to ground etc. depending on your machine, the 2 and 6 should be written on a plate near the panel on older ones. Hopefully someone else will have the codes to help you out.

 

[OldMachinist]

It could be a bad sender or bare wire somewhere. I can't remember the BOSS codes, one is sender not connected, sender out of range, short to ground etc. depending on your machine, the 2 and 6 should be written on a plate near the panel on older ones. Hopefully someone else will have the codes to help you out.

I copied this from one of Ken's old posts.
Boss Codes
AF = air filter, 3 = wire not connected
Codes are as follows
ECL engine coolant level
EC engine coolant temp
EP engine oil pressure
ES engine speed
AF air filter
H Hydrostatic fluid temp
b Battery (show on display in Lower Case)
FUEL fuel level
HF Hydraulic Filter
HP Hydraulic Fluid pressure
All these codes will be followed by a number, not all numbers apply to all codes
Example 1 is the engine shutdown code but there is no FUEL 1 or No AF1 because these are not serious failures.
Numbers are as follows
1 Shutdown engine in 30 seconds
2 Warning
3 wire not connected
4 wire shorted
5 High sensor voltage
6 Sensor no signal
7 Sensor out of range
If you see some sort of jiberish on the display you likely have a bad ground .
There are also code number 1.1 2.1 and 2.2
EC has a 1.1 shutdown and a 2.1 Warning code
ES hase a 2.1 warning code
b has a 2.1 warning bad battery and a 2.2 Warning battery voltaage
Therte are up to 4 relays
starter, glow plugs, park brake , not sure on 4th , I think it the fuel shut off soliniod on the Kubota engine models
Ken

 

[Woodside773]

I copied this from one of Ken's old posts.
Boss Codes
AF = air filter, 3 = wire not connected
Codes are as follows
ECL engine coolant level
EC engine coolant temp
EP engine oil pressure
ES engine speed
AF air filter
H Hydrostatic fluid temp
b Battery (show on display in Lower Case)
FUEL fuel level
HF Hydraulic Filter
HP Hydraulic Fluid pressure
All these codes will be followed by a number, not all numbers apply to all codes
Example 1 is the engine shutdown code but there is no FUEL 1 or No AF1 because these are not serious failures.
Numbers are as follows
1 Shutdown engine in 30 seconds
2 Warning
3 wire not connected
4 wire shorted
5 High sensor voltage
6 Sensor no signal
7 Sensor out of range
If you see some sort of jiberish on the display you likely have a bad ground .
There are also code number 1.1 2.1 and 2.2
EC has a 1.1 shutdown and a 2.1 Warning code
ES hase a 2.1 warning code
b has a 2.1 warning bad battery and a 2.2 Warning battery voltaage
Therte are up to 4 relays
starter, glow plugs, park brake , not sure on 4th , I think it the fuel shut off soliniod on the Kubota engine models
Ken

Thank you, great information, I'm thinking it is a sensor issue, hopefully just a loose ground.

 

[Dale bobcat 863]

Hi, just bought a used 863 Bobcat Skid steer. Is there any way to figure out the year of the unit?

 

[Dale bobcat 863]

What causes the af2 panel lights up and then beeps. Just replaced the the filters.