I have a 2007 Ford Crown Victoria Police Interceptor with 85k miles and the ABS and Brakes light are on once in a while but are off most of times. What could be the reason?
There could be a number of causes but probably the most common on older vehicles is a wheel speed sensor going out on you. The cables go bad due to flexing and exposure to the elements.
How to check for it?
A professional-grade scan tool that can read ABS fault codes and test the sensors.
or, you could look at them with your eyeballs and visually inspect for damage, and if you're ambitious connect a meter to them to measure the signal
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(see "I have a warning light on the dash")
why the downvote? You question is answered there. Do you disagree?
I don't get any trouble code from the OBD2 port but the ABS warning light still occasionally turns on.
if the light is on then diagnostics have to tell you something. You just need the right scanner.
Is there a way to check the ABS old school like during the times there were no OBD2 ports?
No
I don't get any trouble code from the OBD2 port but the ABS warning light still occasionally turns on.
What kind of scan tool are you using? A generic OBD2 reader will not read ABS codes. As has already been explained, for that you need a professional-grade scanner or the factory scanner.
SCTflash
That looks like a company selling performance tuning tools. I would not expect their products to read Ford ABS codes unless that capability is indicated in the tool's specifications.
Thank you. Can you recommend me some scanning tools that are capable of solving the issue? Some that have a good balance/quality ratio.
See the FAQ and the "Tools" link at the top of the page.
Can humidity cause some issues on an ABS sensor?
Of course. Moisture can potentially cause problems in anything electrical.
The right scan tool will tell you exactly what is happening in seconds. On my own car when I was getting an intermittent ABS light my scanner immediately informed me that there was an intermittent bad connection detected on one of the wheel sensors.
Other than the sensors themselves any kind of debris that gets between the sensor and trigger wheel can cause a failure.
If it's not a sensor causing the ABS light things quickly get a lot more expensive.
I used the apps Forscan and Carista while the ABS light is on but the apps don't read any code either. They are supposed to read and clear ABS DTC.
If your ABS light is on and those don't see anything then it would appear they're not able to scan the ABS system in your car.
issues on an ABS sensor?
Is there a way to check the ABS old school like during the times there were no OBD2 ports?
About all you can really do is physical examination of wheel sensors, wiring, and connectors for damage or corrosion and test the wheel sensors manually using a multimeter. If you have electromagnetic sensors they are tested with the ohms function, if you have Hall effect sensors they are tested by AC voltatge.
https://www.youtube.com/watch?v=Yg1-UyCfQlg
https://www.youtube.com/watch?v=9DirjbUJKXE
It's a lot easier and quicker though to use a scan tool that can read the ABS. When my ABS light turned on I found a bad wheel sensor in about 5 seconds once the scanner was connected.
There is a local seller that sells scanners. He advised 2 scanners to me both from Creader. The one is the CR629 and the other one is the CRPP123 (for professional use). I am a hobby DIY mechanic but the difference between these 2 is not huge. Around 30 bucks. Should I go for the professional one or is the cheaper one enough for me?
I am not familiar with either device so really can't say. However for just $30 difference I'd probably go with the "professional" one which presumably has more functionality.
did you make sure the module has good power and ground? If you just fire parts at the problem, there's good chance you won't be any better off, just poorer.
OK but I get that warning light only when the weather is humid, otherwise not
Can humidity cause some issues on an ABS sensor?
I receive the B1596 Service Continuous Codes DTC code
https://www.fordobdcode.com/b1596-ford
Does anyone know what may be the cause?
I own a 2007 Ford Crown Victoria Police Interceptor with 86k miles. I have this code in the Continuous Memory DTC: B1596: Repair Continuous Codes. Even if I delete it, the ABS and Brakes lights keeps coming back, even if I delete it after several Key On and Off cycles. If the ABS module really is dead, what are my options? I saw that a module on Rock Auto costs $500 and I'm not really interested investing so much money into that car. Used part? Getting mine refurbished (by who?)? Or can I just remove the bulbs out of the cluster and live without ABS?
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You need a high-end bidirectional scan tool to diagnose that.
It has some features. Functions coming from the ABS are turned off and the sensors say that I'm always at 0mph.
Can you do bidirectional testing to activate and test components in the system?
No but I can read some live data and noting comes out of it
All inlet and outlet valve states are off, ABS pump motor relay off, ABS valve control relay off, brake off, continuous code 1, ignition 14.45V, DTC count (including those needing no action) 1, missing the CAN message from the PCM off, all wheel speed sensors at 0.
Any suggestion?
About all I can see here would be to do bidirectional testing on the ABS system to isolate the fault. Someone more familiar with that specific vehicle may have other ideas.